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Which statement is true? A sample statistic can never be equal to the population parameter. Point estimates are defined for both samples and populations. To calculate a sample proportion, we need to know the population size. To calculate a point estimate, we need to know the sample size

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Answer:

Option C is true. To calculate a sample proportion, we need to know the population size.

Step-by-step explanation:

To calculate a sample proportion, we need to know the population size. – This is the true statement.

A sample statistic can never be equal to the population parameter. This is false. A statistic is a feature of sample and a parameter is a feature of  population. Every sample of the selected size has an equal chance of being used.

Point estimates are defined for both samples and populations. This is false. A point estimate is used to estimate the population parameter.

To calculate a point estimate, we need to know the sample size. This is false. Population is needed.

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A proportion is an equation that states two _____ are equal. 1. Variables 2. Ratios 3. Expressions 4. Numbers

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A proportion is an equation that states two _____ are equal. 1. Variables 2. Ratios 3. Expressions 4. Numbers

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Explain how to solve a/ 5/8 = 3/5/ 2/3. Then solve the proportion. Show your work please.

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Answered by answersmine AT 22/10/2019 – 03:36 AM

You can solve this by cross multiplying the two fractions. 
a / 5/8 = 3/5 / 2/3
2/3 *a = 3/5 * 5/8
2a/3 = 15/40
Multiply the 3 from the left side’s denominator into the right side’s numerator.
2a= 45/40
Divide both sides by 2
a= 45/80
Simplify
a = 9/16

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Solve the proportion H/4=7/14

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Solve the proportion H/4=7/14

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The protein that maintains proper proportion and concentration of water in blood is

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Answer:

Helicases unwind the two parental DNA’s strands and creates the replication fork; single strand binding proteins keep the single strand from joining.


Further information:

• DNA replication: a biological method occurring in all living organisms that is the basis for biological inheritance

Helicase: It is an enzyme that may unwinds the DNA helix ahead of the replication machinery.

Origin of replication: a specific sequence in a genome at which replication is started.


Steps of DNA replication:

• During initiation, proteins fix to the source of replication while helicase unwinds the DNA helix and two replication forks are formed at the source of replication.

• During elongation, a primer sequence is added with complementary RNA nucleotides, which are then substituted by DNA nucleotides.

• During elongation the leading strand is made constantly, while the lagging strand is made in portions called Okazaki fragments.

• During termination, primers are detached and substituted with new DNA nucleotides and the backbone is stuck down by DNA ligase.

Purpose of DNA replication:

The purpose of DNA replication is to produce two duplicate copies of a DNA molecule. This is essential for cell division during development or repair of damaged tissues. DNA replication ensures that each new cell receives its own replica of the DNA.

Answer details:

Subject: Biology

Level: High school

Keywords:

• DNA replication

• Helicase

• Origin of replication

• Steps of DNA replication

Learn more to evaluate:

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brainly.com/question/5939912

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brainly.com/question/10652950

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Using the side-splitter theorem, Daniel wrote a proportion for the segments formed by line segment DE. What is EC? 2 units 2.4 units 3 units 3.75 units

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The basis to respond this question are:

1) Perpedicular lines form a 90° angle between them.

2) The product of the slopes of two any perpendicular lines is – 1.

So, from that basic knowledge you can analyze each option:

a.Lines s and t have slopes that are opposite reciprocals.

TRUE. Tha comes the number 2 basic condition for the perpendicular lines.

slope_1 * slope_2 = – 1 => slope_1 = – 1 / slope_2, which is what opposite reciprocals means.

b.Lines s and t have the same slope.

FALSE. We have already stated the the slopes are opposite reciprocals.

c.The product of the slopes of s and t is equal to -1

TRUE: that is one of the basic statements that you need to know and handle.

d.The lines have the same steepness.

FALSE: the slope is a measure of steepness, so they have different steepness.

e.The lines have different y intercepts.

FALSE: the y intercepts may be equal or different. For example y = x + 2 and y = -x + 2 are perpendicular and both have the same y intercept, 2.

f.The lines never intersect.

FALSE: perpendicular lines always intersept (in a 90° angle).

g.The intersection of s and t forms right angle.

TRUE: right angle = 90°.

h.If the slope of s is 6, the slope of t is -6

FALSE. – 6 is not the opposite reciprocal of 6. The opposite reciprocal of 6 is – 1/6.

So, the right choices are a, c and g.

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1). A tax that takes higher proportion from a low-income person than a rich person is known as a/an __ tax? a). proportional b). regressive c). progressive d). estate 2). Which of the following is an external factor that helps create the business cycle? a). Government spending b).Consumer spending c). Bad weather d). Psychological factors 4). Which of the following is an advantage of investing in a mutual fund? a). Guaranteed profit b). No risk c). Investments are made in only one company d). Professional management 6). A characteristic of a natural monopoly is that a). adding businesses in competition would increase cost to the consumer b). the firm is supported by the consumer and voted into existence by the voters c). the firm is dedicated to the use of natural resources d). there’s no government intervention in the market 7). How could the government fight inflation? a). raise taxes b). lower taxes c). add more unemployment insurance d). increase spending 12). A merger between a company and one of its suppliers is known as a ___ merger? a). vertical b). supply c). demand d). horizontal 15). A tax levied on inherited money is known as a/an __ tax? a). excise b). sales c). estate d). death 19). Each worker doing a small part of the overall manufacturing process is known as? a). specialization b). interchangeable parts c). automation d). appreciation 20). Which of the following is a reason for the growth of federal government spending? a). less demand for services b). growing population c). shrinking population d). deflation Please I Need Help Only With These…..

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The Contribution Margin per unit (CM) can be calculated
from the difference of Selling Price per unit (SP) and Total Expenses per unit
(TE).

 

First, let’s calculate the value of SP:

SP = Sales / Units sold

SP = $1,043,400 / 22,200 units sold

SP = $47

 

Second, calculate all expenses:

Direct materials per unit = $234,948 / 27,970 units
manufactured = $8.4

Direct labor per unit = $131,459 / 27,970 units
manufactured = $4.7

Variable manufacturing overhead per unit = $240,542 / 27,970
units manufactured = $8.6

Variable selling expenses per unit = $113,220 / 22,200
units sold = $5.1

TE = $26.8

 

Therefore the CM is:

CM = SP – TE

CM = $47 – $26.8

CM = $20.2 per unit

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Please assist: Solve the following proportion for v.v6=317 Round your answer to the nearest tenth.

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You need to determine the number of ways in which 30 competitors from 50 can qualify. First, you have to realize that the order is irrelevant, that is: it is the same competitor_1, competitor _2, competitor _3 than competitor_3, competitor_2, competitor_1, or any combination of those three competitors.

So, the number of ways is which 30 competitors from 50 can qualify is given by the formula of combinations, which is:

C (m,n) = m! / (n! * (m -n)! )

=> C (50,30) = 50! / (30! (50 – 30)! ) = (50!) / [30! (50 – 30)!] = 50! / [30! 20!] =

 = 47,129,212,243,960 different ways the qualifiying round of 30 competitors can be selected from the 50 competitors.

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70/x = 15/21 solve proportion

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If two triangles are similar then the corresponding sides are in proportion. Thus,

AB / AU = BC / UV = AC / AV

AB / (20x+108) = 703 / 444

Where AB is equivalent to:

AB = AU + UB

AB = 20x + 108 + 273

AB = 20x + 381

Therefore going back to the first equation:

(20x + 381) / (20x + 108) = 703/444

444 (20x + 381) = 703 (20x + 108)

8880x + 169164 = 14060x + 75924

14060x – 8880x = 169164 – 75924

5180 x = 93240

x = 93240 / 5180

x = 18          (ANSWER)

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Vitamin d – resistant rickets is an x-linked dominant bone disorder. a man with this form of rickets marries a normal woman. what proportion of the couple's daughters is expected to have vitamin d – resistant rickets

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Vitamin d – resistant rickets is an x-linked dominant bone disorder. a man with this form of rickets marries a normal woman. what proportion of the couple’s daughters is expected to have vitamin d – resistant rickets

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If the inflation rate increases faster than their income, people will most likely: A. use a higher proportion of their incomes on basic needs B. spend a lower proportion of their incomes on basic needs C. get more goods and services for less money D. obtain less goods and services for less money

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Answer:

29.68%

Step-by-step explanation:

Allen’s monthly take-home pay is $3000

His monthly rent is $750

Now both his monthly take-home pay and his rent increase by $200

So, After increase Allen’s monthly take-home pay =$3000+$200= $3200

After increase His monthly rent = $750+200=$950

Now we are supposed to find what percentage of Allen’s take-home pay will be used to pay rent

So, percentage = frac{text{Rent after increase}}{text {Take- home pay after increase}} times 100

                          = frac{950}{3200}times 100  

                          = frac{950}{32}  

                          = 29.68%  

Hence 29.68% of Allen’s take-home pay will be used to pay rent.                          

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If a dihybrid F1 plant is self fertilized, what proportion of progeny will have the same phenotype as the F1 parent? What proportion will be true-breeding? What proportion will be heterozygous at one or both loci?

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The right answer is D.

Meiosis consists of two successive cell divisions that will give birth to gametes.

After the meiosis, the original cell gave birth to four haploid cells whose genomes were recombined in a unique way.

In humans, the cells that will participate in meiosis are spermatocytes and oocytes.

In the cells that will enter into meiosis, the replication of A.D.N. occurred during interphase, each chromosome consists of 2 chromatids connected by their centromere. (Each chromatide is formed of a double-stranded A.D.N molecule and molecules that maintain its structure)

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There are 325 students in ping pong club. There are 5 girls for every 7 boys in the club. Which is the correct proportion that can be used to determine the number of girls in the club?

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Answer:

Option C – BD=76 cm

Step-by-step explanation:

Given : You are designing a diamond-shaped kite. you know that AD = 44.8 cm, DC = 72 cm, and AC = 84.8 cm.

To find : How long BD should it be?

Solution :

First we draw a rough diagram.

The given sides were AD = 44.8 cm, DC = 72 cm and AC = 84.8 cm.

According to properties of kite

Two disjoint pairs of consecutive sides are congruent.

So, AD=AB=44.8 cm

DC=BC=72 cm

The diagonals are perpendicular.

So, AC ⊥ BD

Let O be the point where diagonal intersect let let the partition be x and y.

AC= AO+OC

AC=  x+y=84.8 …….[1]

Perpendicular bisect the diagonal BD into equal parts let it be z.

BD=BO+OD

BD=z+z

Applying Pythagorean theorem in ΔAOD

where H=AD=44.8 ,P= AO=x , B=OD=z

H^2=P^2+B^2

(44.8)^2=x^2+z^2  ………[2]

Applying Pythagorean theorem in ΔCOD

where H=DC=72 ,P= OC=y , B=OD=z

H^2=P^2+B^2

(72)^2=y^2+z^2 …………[3]

Subtract [2] and [3]

(72)^2-(44.8)^2=y^2+z^2-x^2-z^2

5184-2007.04=(x+y)(x-y)

3176.96=(84.8)(x-y)

37.464=x-y ……….[4]

Add equation [1] and [4], to get values of x and y

x+y+x-y=84.8+37.464

2x=122.264

x=61.132

Substitute x in [1]

x+y=84.8

61.132+y=84.8

y=23.668

Substitute value of x in equation [2], to get z

(44.8)^2=x^2+z^2

(44.8)^2=(23.668)^2+z^2

2007.04-560.174224=z^2

z=sqrt{1446.865776}

z=38.06

We know, BD=z+z

BD= 38.06+38.06

BD= 76.12

Nearest to whole number BD=76 cm

Therefore, Option c – BD=76 cm is correct.

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A furniture factory makes 5 recliners for every 3 couches. If the factory makes a total of 56 recliners and couches in a day, how many recliners were made? Select the correct proportion to solve this problem.

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A furniture factory makes 5 recliners for every 3 couches. If the factory makes a total of 56 recliners and couches in a day, how many recliners were made? Select the correct proportion to solve this problem.

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Select all that apply. Which of the following represents the proportion 6 is to 9 as 12 is to 18? 1. 6/9 = 12/18 2. 6:9:12:18 3. 6/18 = 9/12 4. 6/12 = 9/18

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The basis to respond this question are:

1) Perpedicular lines form a 90° angle between them.

2) The product of the slopes of two any perpendicular lines is – 1.

So, from that basic knowledge you can analyze each option:

a.Lines s and t have slopes that are opposite reciprocals.

TRUE. Tha comes the number 2 basic condition for the perpendicular lines.

slope_1 * slope_2 = – 1 => slope_1 = – 1 / slope_2, which is what opposite reciprocals means.

b.Lines s and t have the same slope.

FALSE. We have already stated the the slopes are opposite reciprocals.

c.The product of the slopes of s and t is equal to -1

TRUE: that is one of the basic statements that you need to know and handle.

d.The lines have the same steepness.

FALSE: the slope is a measure of steepness, so they have different steepness.

e.The lines have different y intercepts.

FALSE: the y intercepts may be equal or different. For example y = x + 2 and y = -x + 2 are perpendicular and both have the same y intercept, 2.

f.The lines never intersect.

FALSE: perpendicular lines always intersept (in a 90° angle).

g.The intersection of s and t forms right angle.

TRUE: right angle = 90°.

h.If the slope of s is 6, the slope of t is -6

FALSE. – 6 is not the opposite reciprocal of 6. The opposite reciprocal of 6 is – 1/6.

So, the right choices are a, c and g.

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A bottler of drinking water fills plastic bottles with a mean volume of 1001 milliliters (ml) and standard deviation of 6 ml. the fill volumes are normally distributed. what proportion of bottles have volumes less than 1001 ml?

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Alright so think of it this way. You want the number of hamburger patties to equal the number of rolls with as little packages as possible.
              # of Packages         # per package        total #
Patties               1            x               6              =     6    
Rolls                  1            x               8              =     8

As you see above, the total number of patties and rolls is related to the product of the number of packages and the number per package.
Therefore to answer this problem, just find the least common multiple of 6 and 8:

Multiples of 6: 6, 12, 18, 24, 36…
Multiples of 8: 8, 16, 24, 32, 40….

24 is the least common multiple. To get to 24, you multiply 6 by 4 and 8 by 3. Therefore, you need 4 packages of 6 hamburgers, and 3 packages of 8 rolls.

This is confirmed in the table below:
               # of Packages         # per package        total #
Patties               4            x               6              =     24   
Rolls                  3            x               8              =     24

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Please help! Joe uses a credit card to buy $396 of groceries and makes no payments for a year. The credit card charges 29% interest. Which proportion tells the amount that needs to be added to $396 to find how much he owes in interest at the end of the year? 29/100 = 396/x x/396 = 29/100 396/29 = x/100 396x/29 = 100/1

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Answered by answersmine AT 19/10/2019 – 12:03 AM

Please tell me the bank in which Joe uses because I would love it if the bank only calculated interest once every year.  🙂

But to answer your question, assuming it does then to find interest it would be 

x = 396(.29)

Why on earth they have it written like that is beyond me, but to rewrite the correct answer in the form of your answer choices you it would be
 x/396 = 29/100

Post your answer

Related questions


If f(x) = 2x 2 + 3, find f(3). 31 15 21 39

Answer: 21

Step-by-step explanation:

We are given a function f(x) = 2x^2 + 3

To find the value of f(3), we need to substitute x=3 in the given function, we get

f(3) = 2(3)^2 + 3\\Rightarrow f(3)=2(9)+3..............[text{Since} 3^2=9]\\Rightarrow f(x)=18+3..............[text{Since} 2times9=18]\\Rightarrow f(x)=21..........[text{Addition property}]

Hence, the value of f(3) = 21.

ANSWERED AT 19/10/2019 – 12:57 AM


QUESTION POSTED AT 19/10/2019 – 12:57 AM


How to find the length of a leg of a 45 45 90 triangle?

The legs are the same length. if x represent the legs length the hypotenuse is equal to x√2. if you have the length of the hypotenuse just divide its length by the square rot of two.

ANSWERED AT 19/10/2019 – 12:53 AM


QUESTION POSTED AT 19/10/2019 – 12:53 AM


The perimeter of a kite is 52 meters. If one side measures 19 meters find the measure of the opposite side. 16.5 meters 14 meters 7 meters 19 meters

The answer is:  [C]:  “7 m” .
________________________________________________
Using the formula for the perimeter of kite:

Perimeter:
P = 2(a+b) ;  a = length of side “a” ; b = length of side “b”;
_________________________________________________

Given: The Perimeter, “P: = 52 m ;   b = 19 m;

52 = 2(a+19) ; solve for “a” :

52 = 2a + 38 ;  Subtract “38” from each side of the equation;

52 – 38 = 2a + 38 – 38 ;

to get :  14 = 2a ;  ↔ 2a = 14 ;
Now, divide EACH SIDE of the equation by “2”;                       
                                       to isolate “a” on one side of the equation ; and
                                        to solve for “a” ;
________________________________________________
2a = 14 ;

2a/2 = 14/2 ;

a = 7 m
_____________________________ 
The answer is:  ” 7 m ” .
_____________________________

ANSWERED AT 19/10/2019 – 12:31 AM


QUESTION POSTED AT 19/10/2019 – 12:31 AM


Find the value of y in this equation: 16y = 164

Well 16/16 cancels out so then if you use the divsion proper then you divide on the other side too, so 164/16 is 10.25. THE answer is 10.25

ANSWERED AT 19/10/2019 – 12:24 AM


QUESTION POSTED AT 19/10/2019 – 12:24 AM


Geometry help! How do u do this. Explain and answer

If you have a graphing calculator you can graph the circle using the formula of a circle.I think the center is (-10,4), the radius of a circle is just the diameter divided by 2, and by radical form it means like if you square root the number and it’s not a whole number leave it as a square root. Once you have all of that info, then you can just substitute it into the equation.

ANSWERED AT 19/10/2019 – 12:20 AM


QUESTION POSTED AT 19/10/2019 – 12:20 AM


Find the value of n. 8034 × n = 80.34

The answer is:  ” n = 0.01 ” .
_______________________________________________
Given:  8034 n = 80.34 ; Solve for “n” ;
_______________________________________________
Divide each side of the equation by:  “8034” ; to isolate “n” on one side of the equation; and to solve for “n” ;
_______________________________________________
       8034 n / 8034 = 80.34 / 8034 ;
_______________________________________________
 to get:    n = 0.01  .
_______________________________________________

ANSWERED AT 19/10/2019 – 12:16 AM


QUESTION POSTED AT 19/10/2019 – 12:16 AM


What is the interquartile range of 77 88 92 81 86 84 86 83 and how do you get it thx plz help

To find the IQR you first need to write it in numerical order

77, 81, 83, 84, 86, 86, 88, 92

IQR is just Q3 – Q1

Q1 is the middle of the first have, since it has an even set of 4 numbers in the first half you need to take the average of the two middle ones.. which is 82

Q3 done the same process would be 87. 

87 – 82 = 5

IQR = 5

ANSWERED AT 19/10/2019 – 12:10 AM


QUESTION POSTED AT 19/10/2019 – 12:10 AM


Please help > _ < Show your work and eplain

Alternate exterior means opposite sides of the transversal and outside the parallel lines… angles 1, 2, 5, 6 are all outside the parallel lines.. now you just need to match up the ones that are on opposite sides… 1 and 5 are opposite sides and 2 and 6 are opposite sides.. so those two pairs are the alternate exterior angles.. since 2 and 6 isn’t a choice and 1 and 5 is, then there is your answer.

ANSWERED AT 19/10/2019 – 12:01 AM


QUESTION POSTED AT 19/10/2019 – 12:01 AM


Please help ^ _ ^ Geometry is not my friend 🙁 Please explain and show work

Well starting with just the first statement b is congruent to c by vertical… yes. because they are formed by the intersection and non adjacent.  so A and C are still okay.

answer choice B on the other hand b is congruent to h by corresponding that is not true.. one they are not corresponding and two they are supplementary because they are same side exterior angles.  so you can eliminate B.

now the next line in answer choice a.. c and e are supplementary by ss interior… yes that is correct. 
now the next line in answer choice c.. d and h are supplementary.. that is wrong.. d and h are corresponding and therefore are congruent so you can eliminate answer choice C.

just checking the rest.. e and h are congruent by vertical.. correct.. and finally substitution to finish the proof.  So A is the correct proof.

ANSWERED AT 19/10/2019 – 12:01 AM


QUESTION POSTED AT 19/10/2019 – 12:01 AM


Help – Please explain and show your work

Line r and t are parallel with unknown line intersecting them as a transversal. 138 degree is congruent to angle 2 because line r and t are parallel to each other. angle 2 and 5 are vertically opposite again so angle 5 is also 138 degrees. Now angle 5 and 6 are linear angles i. e summation of 5 and 6 is 180 degrees.

138 + angle 6 = 180
angle 6 = 42 degrees.

option D is correct. Hope this helps you.

ANSWERED AT 19/10/2019 – 12:00 AM


QUESTION POSTED AT 19/10/2019 – 12:00 AM

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Determine Which ratio forms a proportion with 7/2 by finding a common multiplier. A- 35/8 B- 70/20 C- 28/10 D- 70/8

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Sample Response: Louise’s answer is not correct. She is missing the term 30×3. When squaring a binomial, it is best to write the product of the binomial times itself. Then you can use the distributive property to multiply each term in the first binomial by each term in the second binomial. Louise also could have used the formula for a perfect square trinomial, which is found by squaring a binomial.

What did you include in your response? Check all that apply.

Louise is missing the term 30×3.

Louise could have used the formula for a perfect square trinomial.

Louise squared each term in the binomial rather then using the distributive property.

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Solve the following proportion for u. 17 over 13 = u over 9 Round your answer to the nearest tenth. when i say over i mean its a fraction

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1) mesure of an arc= R.Ф, where R is the radius & Ф the angle IN RADIAN

32

°===>8π/45 OR 0.5585, So mes of Arc CD = 6×0.5585 = 3.35 cm

2) DAC = 31° & CAD =27° , these 2 angles being adjacent I can write that

Angle(DAC +CAB=DCB) ==>Angle DCB =(31°+27°=58°)

To remember that any vertex of an angle on the circles, its sides intercept an arc which mesure is twice the angle,

Hence since mes Angle DCB=58°, that means the ARC intercepted, namely DB has a length of 2x 58 = 116°

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8.01)Ben takes a random sample of 25 students in his seventh-grade class and finds that 85% of the sample prefers math over science. There are 150 students in the seventh grade. Based on the sample proportion, about how many students in the seventh grade would be expected to prefer math over science? 25 85 150 128 08.01)Carla wants to know how many students in her school enjoy watching reality TV shows. She asks all 22 students in her science class and finds that 40% of her classmates enjoy watching reality TV shows. She claims that 40% of the school’s student population would be expected to enjoy watching reality TV shows. Is Carla making a valid inference about her population? No, it is not a valid inference because she asked all 22 students in her science class instead of taking a sample from her music class No, it is not a valid inference because she asked all 22 students in her science class instead of taking a sample of the students in her school Yes, it is a valid inference because she asked all 22 students in her science class Yes, it is a valid inference because her classmates make up a random sample of the students in the school

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Answer:

60 feet

Step-by-step explanation:

The area of the school is

165(300) = 49500 square feet.

The area of the parking lot with the school is

(165+75)(300+75) = 240(375) = 90000 square feet.  This means the area of just the parking lot is

90000-49500 = 40500 square feet.

The area of the new expanded lot will be doubled; this means it will be

2(40500) = 81000 square feet.  Adding back the area of the school, this means the total lot will be

81000+49500 = 130500 square feet.

The width will be 375+x and the length will be 240+x; this gives us

130500 = (375+x)(240+x)

Multiplying the binomials gives us

130500 = 90000+375x+240x+x²

130500 = 90000+615x+x²

To solve this, we first set it equal to 0.  We do this by subtracting 130500 from each side:

130500-130500 = 90000+615x+x²-130500

0 = x²+615x-40500

We will use the quadratic formula:

x=frac{-bpm sqrt{b^2-4ac}}{2a}

Substituting our values for a, b and c,

x=frac{-615pm sqrt{615^2-4(1)(-40500)}}{2(1)}\\=frac{-615pm sqrt{378225--162000}}{2}\\=frac{-615pm sqrt{378225+162000}}{2}\\=frac{-615pm sqrt{540225}}{2}\\=frac{-615pm 735}{2}\\=frac{-615+735}{2}text{ or }frac{-615-735}{2}\\=frac{120}{2}text{ or }frac{-1350}{2}\\=60text{ or }-675

We do not use negative numbers for measurement, so x = 60.

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