At least 6, means: either 1 and 2 and 3 and 4 and 5 and 6 Probability(that Florida is a nice place to live) = 60% = 0.6If at least 6 randomly selected like Florida:P(at lest 6 LIKE Florida) = (0.6)⁶ = 0.04665P(at least 6 DON’T LIKE Florida) = 1-0.04665 …

Read More »## 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?

Answer: 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 …

Read More »## Consider a political discussion group consisting of 9 Democrats, 7 Republicans, and 3 Independents. Suppose that two group members are randomly selected, in succession, to attend a political convention. Find the probability of selecting no Democrats

Well, first you would add up how many objects you have to select from 9 democrats + 7 Republicans + 3 Independents = 19 total peopleso then you would put how many people you can have over that numberso since we don’t want any Democrats it would be 10/19 (.52)and …

Read More »## The body temperatures of adults are normally distributed with a mean of 98.6° f and a standard deviation of 0.60° f. if 36 adults are randomly selected, find the probability that their mean body temperature is greater than 98.4° f. 0.0228 0.8188 0.9360 0.9772

Here the population standard deviation is 0.60 degree F. If a sample of 36 adults is randomly selected, that results in a sample standard deviation of 0.60 degree F divided by the square root of 36: 0.10 degree F. The probability in question is the area under the standard normal …

Read More »## If you have a bag that contains 24 marbles: 4 red, 12 blue, 6 black, 2 green. what is the probability of randomly picking one marble that is black?

Parallel lines…means ur equations will have the same slope and different y int’s. x – 2y = 8….-2y = -x + 8….y = 1/2x – 4…slope is 1/2, y int is -42x + 4y = 12…4y = -2x + 12….y = -1/2x + 3…slope is – 1/2, y int is …

Read More »## A box contains 60 colored balls: 45 of the balls are purple, and 30 of the purple balls have stars on them. if a purple ball being randomly chosen and a ball with stars being randomly chosen are independent events, how many of the 60 colored balls have stars on them? use conditional probability to justify your answer.

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 …

Read More »## 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 …

Read More »## Sixty-five percent of men consider themselves knowledgeable football fans. if 12 men are randomly selected, find the probability that exactly four of them will consider themselves knowledgeable fans.

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 …

Read More »## A librarian randomly selects 25 returned books one day and finds that three of them were returned late. based on this sample, how many of the 410 returned books that day are likely to be late returns?

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 …

Read More »## Student identification codes at a high school are 4-digit randomly generated codes beginning with 1 letter and ending with 3 numbers. there are 26,000 possible codes. what is the probability that you will be assigned the code a123?

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 …

Read More »## In a quiz contest, Mary answers 90% of the questions correctly without any additional clues from the quiz coordinator. The randomly generated numbers below simulate this situation. The numbers 0 to 8 represent questions answered correctly without additional clues, and the number 9 represents questions that needed additional clues.

To solve this problem, we should note that there are: total questions = 100 questions answered correctly = 90 questions that needed additional clues = 10 1. The first question is to find the probability that in the third question, Mary would need additional clue. Therefore this implies that in …

Read More »## URGENT A committee of 3 people is to be randomly selected from a group of 5 women and 8 men. What is the probability that the committee will consist only of women? A. 5/143 B. 7/143 C. 28/143 D. 30/143

## A new surgery is successful 75% of the time. if the results of 10 such surgeries are randomly sampled, what is the probability that fewer than 9 of them are successful

Answer: The correct option is (C). 10 = square root of the quantity of x minus 8 all squared plus y minus 9 all squared Step-by-step explanation: Given that the segment AB has point A located at (8, 9). The distance from A to B is 10 units. We are …

Read More »## Among the contestants in a competition are 3636 women and 2525 men. if 5 winners are randomly? selected, find the probability that they are all? men? round to five decimal places.

## Researchers want to test the effectiveness of a new anti-anxiety medication. three hundred eighty patients were recruited to participate in the clinical trial and were randomly assigned to two groups, of which one received the medication, and the other, a placebo. in clinical testing, 64 out of 200 people taking the medication reported symptoms of anxiety. of the other 180 people receiving a placebo, 88 reported symptoms of anxiety. do you think if the patients in the two groups performed significantly different with respect to symptoms of anxiety? please use 0.05 as the level of significance. (hint: use 1.96 and -196 as the critical z-values).

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, …

Read More »## A tour boat operator wants to know the average age of all the people in her tour group. She randomly selects 8 people in the group and asks them for their ages. Their responses are 19, 27, 25, 21, 44, 22, 45, and 34. What is the best estimate of the average age of all the people in the tour group? Round to the nearest whole number.

## In a certain? country, the true probability of a baby being a boy is 0.534. among the next six randomly selected births in the? country, what is the probability that at least one of them is a girl??

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. …

Read More »## Your parents are always complaining that you do not do enough housework. they say that you should be helping them out because you are only a student and you have a lot more spare time than them. the number of hours per week that your parents work has a mean of 48.69 hours and a standard deviation of 2.90 hours. you believe that the number of hours per week that you have to study for university has a mean of 48.17 hours and a standard deviation of 2.60 hours. you plan to record the number of hours that you study each week over 15 randomly selected weeks throughout the year. calculate the probability that the mean of your sample is greater than the mean number of hours per week worked by your parents. assume that the population of study hours per week is normally distributed. give your answer as a decimal to 4 decimal places. probability

## Find the probability that 4 randomly selected people all have the same birthday. Ignore leap years. Round to eight decimal places.

## You want to make five-letter codes that use the letters A, F, E, R, and M without repeating any letter. What is the probability that a randomly chosen code starts with A? 0.10 0.15 0.20 0.25

The triangle ABC is similar to triangle LMP. The order here is very important. The letters correspond to one anotherA corresponds to L (first letters of each sequence) B corresponds to M (second letters of each sequence)C corresponds to P (third letters of each sequence) In a similar fashion, the segments …

Read More »## A study of sleep patterns randomly selected participants in the study to sleep in either a dark room or a room with light. Which element of experiment design is known to be a part of this study? A. blinding B. replication C. randomization

A study of sleep patterns randomly selected participants in the study to sleep in either a dark room or a room with light. Which element of experiment design is known to be a part of this study? A. blinding B. replication C. randomization

Read More »## A box contains ten cards labeled J, K, L, M, N, O, P, Q, R, and S. One card will be randomly chosen. What is the probability of choosing a letter from L to Q?

A box contains ten cards labeled J, K, L, M, N, O, P, Q, R, and S. One card will be randomly chosen. What is the probability of choosing a letter from L to Q?

Read More »## The director of a customer service center wants to estimate the mean number of customer calls the center handles each day, so he randomly samples 26 different days and records the number of calls. the sample yields a mean of 258.4 calls with a standard deviation of 32.7 calls per day. the 95% confidence interval for the mean number of calls per day has an upper bound of ________. (round your answer to 1 decimal place.)

First we calculate for the total number of possibilities (permutation) to select 4 disks from the container: Total number of possibilities = 10 * 9 * 8 * 7 Total number of possibilities = 5040 Now let us find the 4 disks that will result in a range of 7. …

Read More »## The probability that a randomly selected 55?-year-old male garter snakegarter snake will live to be 66 years old is 0.932080.93208. ?(a) what is the probability that two randomly selected 55?-year-old male garter snakegarter snakes will live to be 66 years? old

[Incomplete question. I found a table in other source – see attachment] I made a graph and it looks like a line (see attachment). If the proportion is exactly linear, you have to use this kind of equations: y=mx+b where: y are the sales x is the number of months …

Read More »## The probabilities of the orphaned pets in six cities’ animal shelters being different types of animals are given in the table. If a randomly selected orphaned pet in a St. Louis animal shelter is a dog, what is the probability that it is a mastiff? City Cat Dog−Lhasa Apso Dog−Mastiff Dog−Chihuahua Dog−Collie Austin 24.5% 2.76% 2.86% 3.44% 2.65% Baltimore 19.9% 3.37% 3.22% 3.31% 2.85% Charlotte 33.7% 3.25% 3.17% 2.89% 3.33% St. Louis 43.8% 2.65% 2.46% 3.67% 2.91% Salt Lake City 28.9% 2.85% 2.78% 2.96% 2.46% Orlando 37.6% 3.33% 3.41% 3.45% 2.78% Total 22.9% 2.91% 2.68% 3.09% 2.58% 15.30% 18.15% 21.04% 21.84%

Answer: Option: B is the correct answer. The window size that display all the points are: 0 ≤x ≤ 20 ; 0 ≤ y ≤ 60 Step-by-step explanation: We are given a table of values as: x …

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