Question

A)Twenty students in a statistics class decide to have a post-exam victory party. They want to...

A)Twenty students in a statistics class decide to have a post-exam victory party. They want to form an organizing committee by selecting 4 students at random out of the 13 women and 7 men in the class, but they don’t want the committee to be all women or all men. Let the random variable Y be the number of women in the committee. Find P(Y =1). Give your answer to 4 decimal places.

b) Twenty students in a statistics class decide to have a post-exam victory party. They want to form an organizing committee by selecting 4 students at random out of the 13 women and 7 men in the class, but they don’t want the committee to be all women or all men. Let the random variable Y be the number of women in the committee. Find the mean or expected value, E(Y), of the number of women in the committee? Give your answer to 1 decimal places.

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
3. The probability distribution for the number of siblings (Y) for students in a statistics class...
3. The probability distribution for the number of siblings (Y) for students in a statistics class is given by y 0 1 2 3 4 p(y) 0.3 0.3 0.2 0.15 ? a. Find the missing probability. b. Find the mean of the distribution. c. Find the variance of the distribution. 4. A fair die is rolled 120 times. Let Y represent the number of times a three comes up. a. Find the P(Y =19). Do this one by hand using...
In a statistics​ class, students took their pulses before and after being frightened. The frightening event...
In a statistics​ class, students took their pulses before and after being frightened. The frightening event was having the teacher scream and run from one side of the room to the other. The pulse rates​ (beats per​ minute) of the women before and after the scream were obtained separately and are shown in the accompanying table. Treat this as though it were a random sample of female community college students. Test the hypothesis that the mean of college​ women's pulse...
A business statistics professor would like to develop a regression model to predict the final exam...
A business statistics professor would like to develop a regression model to predict the final exam scores for students based on their current GPAs, the number of hours they studied for the exam, the number of times they were absent during the semester, and their genders. The data for these variables are given in the accompanying table. Complete parts a through d below. Score   GPA   Hours   Absences   Gender 87   3.75   2.0   0   Female 77   3.20   4.5   3   Male 82   3.16  ...
ind the number of ways of selecting 12 balls from 6 red bal COMBINATION Solve each...
ind the number of ways of selecting 12 balls from 6 red bal COMBINATION Solve each of the following problems. (Show your work.) Find the number of ways of selecting 12 balls from 6 red balls, 5 white balls and 5 blue balls if each selection consists of 4 balls of each color. Among the seven nominees for two vacancies on the city council are four men and six            women. In how many ways may these vacancies be filled...
Suppose that a random variable X has the distribution (pdf) f(x) =kx(1 -x^2) for 0 <...
Suppose that a random variable X has the distribution (pdf) f(x) =kx(1 -x^2) for 0 < x < 1 and zero elsewhere. a. Find k. b. Find P(X >0. 8) c. Find the mean of X. d. Find the standard deviation of X. 2. Assume that test scores for all students on a statistics test are normally distributed with mean 82 and standard deviation 7. a. Find the probability that a single student scores greater than 80. b. Find the...
(15%) For Applied Management Statistics class you want to know how college students feel about the...
(15%) For Applied Management Statistics class you want to know how college students feel about the transportation system in Barcelona. What is the population in this study? What type of sample would you use and why? (25%) A manager of an e-commerce company would like to determine average delivery time of the products. A sample of 25 customers is taken. The average delivery time in the sample was four days. Suppose the delivery times are normally distributed with a standard...
1. If you want to study the effect of hormonal changes in adolescent boys, your population...
1. If you want to study the effect of hormonal changes in adolescent boys, your population would be Group of answer choices All adolescents All the people in the world All males All adolescent males 2. Which of the following is most likely to be measured categorically? Group of answer choices Weight gain in first year college students Deterioration in driving performance under the influence of alcohol Level of authoritarianism in a sample of public accountants Species of dog appearing...
1.The following data shows test scores for a sample of statistics students. 83, 64, 84, 76,...
1.The following data shows test scores for a sample of statistics students. 83, 64, 84, 76, 84, 54, 75, 59, 70, 63, 80, 84, 73, 68, 52, 65, 90, 52, 95, 36, 78, 61, 59, 84, 95, 47, 87 a. Find a 95% confidence interval for the mean test score for all students. b. Interpret this 95% CI for the population mean. c. What is the margin of error? 2. A recent national survey found that high school students watched...
1. Twelve individuals want to form a committee of four. (a.) How many committees are possible?...
1. Twelve individuals want to form a committee of four. (a.) How many committees are possible? (b.) The 12 individuals consist of 5 biologists, 4 chemists, and 3 physicists. How many committees consisting of 1 biologist, 1 chemist, and 2 physicists are possible? (c.) In the setting of part (b), if all committees are equally as likely, what is the probability the committee formed will consist of 1 biologist, 1 chemist, and 2 physicists? 2. You are out of town...
QUESTION 1 [13 MARKS] Write down only the letter corresponding to your choice next to the...
QUESTION 1 [13 MARKS] Write down only the letter corresponding to your choice next to the question number. 1.1. A random variable that can assume only a finite number of values is referred to as a a) Infinite sequence b) Finite sequence c) Discrete random variable d) Discrete probability function e) All of the above 1.2 Which one of the following statements is incorrect? a) A data set provides information about people, objects or other entities. b) If the possible...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT