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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

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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## What best explains why the sun maintains its size and shape?

What best explains why the sun maintains its size and shape?

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## The average size of inupiaq groups living together were

The average size of inupiaq groups living together were

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## For cells to stay the same size from generation to generation, what two things must be coordinated

For cells to stay the same size from generation to generation, what two things must be coordinated

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## Mitch and haha have gardens that are the same size. Mitch planted 0.250 of his garden with tomatoes. Hans planted 375 1000’s of her garden with tomatoes. Who planted more of their garden with tomatoes? Explain how you found your answer

It will take 2 hours for Jordan and Jake to earn the same amount of money

Step-by-step explanation:

Jordan earns \$9 per hour

Let he worked for x hours

So, he earned in x hours = 9x

Jordan also gets a \$10 weekly allowance.

So, his total earning in x hours = 10+9x

Jake earns \$6.50 per hour at his job.

Let he worked for x hours

So, he earned in x hours = 6.50x

Jake also gets a \$15 weekly allowance.

So, his total earning in x hours = 15+6.50x

Now to know How many hours will it take for Jordan and Jake to earn the same amount of money

[tex]x=2/tex]

Hence it will take 2 hours for Jordan and Jake to earn the same amount of money

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## The relationship between you shoe size and the length of you foot L ( in inches) is given by S = 3L – 22 for men and S = 3L – 21 for women. How long is your foot when your shoe size is the same as the length of your foot and you are the following gender> a man : a woman:

For the shoe size be equal to the length of the foot, this means that L must be equal to S. Now, since we have different equations depending on your gender, we first check the conditions for man.

Since S = 3L – 22 for men, for a person to have a foot length equal to his shoe size, we equate L to S as shown below.

L = S
L = 3L – 22
2L = 22
L = 11

Thus, we can see that men with 11-inch foot would have the same shoe size number. We can apply similar approach to find the length of a woman’s foot that satisfies our conditions as shown.

L = S
L = 3L – 21
2L = 21
L = 10.5

Hence, a woman with a 10.5-inch foot have 10.5 for a shoe size as well.

man: 11 inches
woman: 10.5 inches

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## Samples of size n = 90 are randomly selected from the population of numbers (0 through 9) produced by a random-number generator, and the variance is found for each sample. What is the distribution of the sample variances?

chi square distribution with df = n-1

Step-by-step explanation:

Given that sample of size n=90  are randomly selected from the population of numbers (0 through 9) produced by a random-number generator

Since sample size is large and randomness is followed we can assume that the variable follows a normal distribution.

Hence the sample variance would follow a chi square distribution with degree of freedom =

This is because we have is standard normal hence square will be a chisquare variate.  When we sum n variates we get chi square distribution with df n-1

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## T takes Franklin 14 hours to make a 200-square-foot cement patio. It takes Scott 10 hours to make the same size patio. Which equation can be used to find x, the number of hours it would take Franklin and Scott to make the patio together?

T takes Franklin 14 hours to make a 200-square-foot cement patio. It takes Scott 10 hours to make the same size patio. Which equation can be used to find x, the number of hours it would take Franklin and Scott to make the patio together?

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## How is mathematics used to study space? It is used to determine distances in space It is used to determine the size of objects in space It is used to determine the mass of objects in space All of these

How is mathematics used to study space? It is used to determine distances in space It is used to determine the size of objects in space It is used to determine the mass of objects in space All of these

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## Geographers rank human settlements based on what two factors? A. population and size by area B. size by area and impact/importance to the region C. population and impact/importance to the region D. population and growth rate **THE ANSWER IS C. POPULATION AND IMPACT/IMPORTANCE TO THE REGION**

Geographers rank human settlements based on what two factors? A. population and size by area B. size by area and impact/importance to the region C. population and impact/importance to the region D. population and growth rate **THE ANSWER IS C. POPULATION AND IMPACT/IMPORTANCE TO THE REGION**

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## A bicycle and a tricycle manufacturer makes bikes and trikes with the same size of wheels. They received a shipment of 100 wheels and they must use them all. How many bikes and trikes can they make?

2 trikes (6 wheels) and 47 bikes (94 wheels)
or
4 trikes (12 wheels) and 44 bikes (88 wheels)
or
6 trikes (18 wheels) and 41 bikes (82 wheels)
or
8 trikes (24 wheels) and 38 bikes (76 wheels)
or
10 trikes (30 wheels) and 35 bikes (70 wheels)

As long as you start our with an even number of trikes, you’ll find a way to use up all the tires with no remainders.

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## What most distinguishes projects with a strong need for computer animation from projects without such a strong need? the length of schedule the size of the budget amount of planning demands of clients

Computer animation is the process used for generating animated images with computers. It is also referred to as CGI (Computer-generated imagery or computer-generated imaging).
If you understand the basic film
processes (editing, sound, continuity) you could make an animated film
either by making one drawing after another, moving an object frame by
frame in front of the camera, or using some animation software. However, when it comes to big project what most
distinguishes projects with a strong need for computer animation from projects without such a strong need is the size of the budget, because people that know the animation industry and work well should be additional included in the project and paid.

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## A box has 6 beads of the same size, but all are different colors. Tania draws a bead randomly from the box, notes its color, and then puts the bead back in the box. She repeats this 3 times. What is the probability that Tania would pick a yellow bead on the first draw, then a blue bead, and finally a yellow bead again?

Ahemmm having x-intercepts of -3 and -5.. ..well, that simply means, -3 and -5 are roots or solutions or zeros of the equation

it namely means x = -3 and x = -5, an x-intercept is when the graph touches the x-axis, at that point, the y-intercept is 0, so the point is (-3, 0) and (-5, 0)

if the roots are -3, and -5, then

if you have the zeros/x-intercepts/solutions of the polynomial, all you have to do is, get the factors, as above, and get their product, to get the parent original polynomial.

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## S exercise levels increase, which of the following physiological changes occurs in the respiratory system? A. The respiratory muscles shrink. B. The lungs expand in size. C. The trachea widens. D. The airways narrow.

“Identical twins” who have been raised apart are typically more similar in intelligence level than biological siblings raised together because they have been born with the same genetic code.

Identical twins originate from a single fertilized egg that parts into two. Before it parts, it is either male or female. After it parts, there are either two guys or two females. The two sections of the fertilized egg embed in the uterus and every create one of the twins.

Identical twins have the equivalent hereditary source. No immediate reason for monozygotic twinning has been resolved; it isn’t innate. Monozygotic twins speak to around 33% all things considered. They may look strikingly comparative, and it might be hard to reveal to them separated.

Lawrence Kohlberg felt that one of the only ways individuals will accomplish the objectives in each of his six stages was to participate in “consensus democracy” in small group settings.

Lawrence Kohlberg felt that the best way to support development through these stages was by discourse of good problems and by investment in consensus democracy inside small groups. Consensus democracy was rule by understanding of the gathering, not larger part rule. This would invigorate and widen the reasoning of youngsters and grown-ups, enabling them to advance starting with one phase then onto the next.

3. The answer is “D.  showing a learner how to correct common mistakes”.

The term scaffolding alludes to a procedure in which instructors display or exhibit how to take care of an issue, and afterward venture back, offering support as required. Analyst and instructional architect Jerome Bruner first utilized the term ‘scaffolding’ in this setting, harking back to the 1960s. The hypothesis is that when understudies are given the help they require while discovering some new information, they stand a superior possibility of utilizing that learning freely. Bruner suggests positive association and three methods of portrayal amid educating: activities, pictures, and dialect.

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## Three of the angles of a quadrilateral are 120 48 and 92 what is the size of the forth angle

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 toy basketball hoop for toddlers has a diameter of 10 cm. A regulation basketball hoop has a diameter of 46 cm. Determine the scale factor for the diameter of the toddler size basketball hoop to the diameter of the regulation size basketball hoop. (round answer to two decimal places)

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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## Which of the following methods is NOT used to determine population size? a. indirect observation c. captive breeding b. mark-and-recapture d. sampling

Which of the following methods is NOT used to determine population size? a. indirect observation c. captive breeding b. mark-and-recapture d. sampling

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## Read the following passage: Each day, hundreds of animals lose their habitat as trees are cut down. Every year, our planet loses an area of forest the size of Panama. When once-fertile soils have been exposed to sun and wind for several years, they turn to desert. Which of the following sentences uses the same type of structure as in the passage? A. It’s clear from his tone in chapter 2 that the author dislikes large corporations. B. The patient will immediately spike a fever, followed by fits of chills and sweats. C. Another reason why banks charge fees is to discourage carelessness. D. An example of changing legislation can be seen in the case of Smith v. Ohio.

Hey there!

Correct answer is D. Comma or Period Inside Rule

A. Question mark or exclamation point inside: those are not really necessary.

B. Colon or semicolon: not, a semicolon would divide the whole sentence and it would be shorten; a colon would work but after requested, when there is already a comma.

C. Question mark or Exclamation Point Outside Rule: would not work, becase it is an very polite and affirmative sentence.

D: A comma or period inside rule: actually, just a comma would work. Please, Cooper’s dad requested, go… Cooper’s dad requested must be in between commas as it is a vocative.

Hope this helps

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## Describe how to determine if two polygons have the same size and shape.

Describe how to determine if two polygons have the same size and shape.

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## Marissa researched the cost to have custom T-shirts printed by several local and online vendors. She found that each store’s charge for the job could be modeled by a linear function that combined a flat charge for artwork with a per T-shirt rate. Marissa plotted the functions on a coordinate grid and found that two of the functions produced lines that had the same y-intercept. How should Marissa interpret this result? A:Those two vendors charge the same rate per shirt. B:Those two vendors charge the same flat rate for artwork. C:Those two vendors will have the same total cost to produce one shirt. D:Those two vendors will charge the same total cost for any size job.

C. Yes, because the population values appear to be normally distributed.

Step-by-step explanation:

Given is a graph which shows the distribution of values of a population

The graph has the following characteristics

i) Bell shaped

ii) symmerical about mid vertical line

iii) Unimodal with mode = median =mean

iv) As x deviates more from the mean probability is decreasing and also curve approaches asymptotically the x axis

Hence we find that the curve is a distribution of normal

Option C is right

C. Yes, because the population values appear to be normally distributed.

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## Bacterial colonies can triple in size every 4 days. if you start with 150 bacteria microorganisms, how large would the colony be after 16 days?

3 hours.

Step-by-step explanation:

Let x be the time taken by shoe repairman to repair one pair.

We have been given that his assistant, who takes twice as long to repair a pair of shoes. So time taken by his assistant to repair one pair of shoes would be 2x.

The number of pair of shoes repaired by repairman in one hour would be .

The number of pair of shoes repaired by assistant in one hour would be .

We have been given that together they can fix 16 pairs of shoes in an eight-hour day. We can represent this information in an equation as:

Let us have a common denominator.

Upon cross multiplying our equation we will get,

Therefore, it take 3 hours for the repairman to fix one pair of shoes by himself.

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## What happens to the size of the static frictonal force as you begin to pull on the force scale

Not sure they are asking this, but it may well be:

Static frictional force can be from 0 to a maximum value. For instance, a book on your desk does not move, but the frictional force is zero. Then, when you try to move it, it doesn’t until a moment where it does. The maximum static force is a coefficient (mu_static) multiplied by the Normal force (that in turn is usually derived from the weight, but whichever it is).

Then, after set in motion, static friction does not apply. It is kinetic frictional force, whose formula is the same, but it is just the value (not between zero and a maximum value):

F_kinetic = mu_kinetic * Normal

What happens is that mu_kinetic < mu_static and the frictional force will be less!

Once in motion, it’s easy to keep it moving, right? Hope it helps!

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## A 32-year-old male was injured in a motor vehicle accident and confined to bed for 3 weeks. during this time, the size and strength of muscle fibers decreased, a condition referred to as:

Kamala Markandaya  was a pseudonym used by Kamala Purnaiya Taylor who was born on 01 January 1924 and died on 16 May 2004. She was an Indian novelist and journalist. A native of Mysore, India, Markandaya was a graduate of Madras University, and afterwards published several short stories in Indian newspapers. After India declared its independence, Markandaya moved to Britain, however, she still considered herself an Indian expatriate long afterwards.

Known for writing about culture between Indian urban and rural societies, Markandaya’s first published novel, Nectar in a Sieve, was a bestseller and cited as an American Library Association Notable Book in 1955.

The book is set in India during a period of intense urban development and is the chronicle of the marriage between Rukmani, youngest daughter of a village headman, and Nathan, a tenant farmer. The story is told in the first person by Rukmani, beginning from her arranged marriage to Nathan at the age of 12 to his death many years later.

Food is a critical aspect in the development of the story, Rukmani and Nathan struggle to feed their children and to pay the rent on the land that gives them life. Although difficulties continue to worsen, they quietly resign themselves to ever-increasing sufferings: flood, famine, even death, yet they stick to their hopes for a better future.

One definition of the word season as it is used in Nectar in a Sieve is that:

it is a period of the year associated with something in particular that happens every year

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## A(n) __________ is a large parcel of the atmosphere, sometimes subcontinental in size, that may move over earth’s surface as a distinct, relatively homogenous entity.

Natural Forces Affecting the Driver:

1. While the car stops, the person continues moving the way that the car were moving and then hits the obstacle in the car or the person can be thrown out of the vehicle. If the person wears belt, he will stop moving with the vehicle and won’t hit the obstacle.

2. We count approximate kinetic energy using the formula K = v^2. So the vehicle which is moving at 30 mph will have four times less kinetic energy than vehicle which is moving at 60 mph. If they have the same road conditions, the breaking distance will be four times as great for the car moving twice as fast.

3. Kinetic energy depends on object’s mass and velocity and it has direct relationship with the stopping distance. The lesser mass of the vehicle = the lesser kinetic energy and lesser stopping distance. => If both vehicles have the same velocity, then small vehicle has lesser kinetic energy than large vehicle.

4. We know that kinetic energy has this relationship with velocity K = v^2. So the best way to prepare to enter sharp curves in the roadway is to lower the speed. The most appropriate speed is 20-30 mph, but it depends on road conditions and car’s breaks condition.

5. Car crashes can happen with everyone so the best way is to be prepared. First the driver should wear a seatbelt while he’s driving. He should check his tires and breaks condition regularly. And also it’s important to slow down the vehicle while entering sharp curves. Without following these rules, the driver can get catastrophic injuries in a car crash.

Signs, Signals, and Pavement Markings:

1. It doesn’t matter where you go. All you need is to learn highway code. It’s very different to know the meanings of every road sign. Also, it’s necessary to check your car’s conditions and you should take some spare parts for your car in case of accidents. So wherever you go, it’s important to be prepared.

2. You should stop before crossing and take few minutes to make sure there is no train approaching. If there is no train approaching, you can pass a railroad crossing. If you see approaching train, you should wait until it will pass a railroad crossing.

3. You should stop before the lights and wait to check the traffic movement and signs. Make sure that everything is safe and pass the intersection. Don’t move fast to avoid accidents.

4. Flashing yellow light means that it’s not necessary to stop but you should to pay attention on the traffic movement. So it would be better to yield before the lights and make sure if it’s safe to move. After that you can cross the intersection.

5. The line change means that the lane changes and you can’t cross solid lines. Pay more attention on road marking because it shows how you should behave on the road or highway.

6. As you approach the next exit and  your passengers need to use the restroom and get some food, you should look for green signs which indicate food and rest stops. You should to slow down if you don’t want to skip the sign.

7. When you take the exit ramp off the expressway and merge onto the next road, you see yellow lines dividing the roadway which indicates that there is oncoming traffic and this is a two-way highway.

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## As the product life cycle curve approaches the decline state, a company can attempt to jumpstart the curve again by doing which of the following? find new users and new uses increase the size of their sales force increase the advertising budget increase free samples as incentives to buy none of the above

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