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7. Which of the following probability notations represents the z-score? A. P(z>2.50) B. P(z<2.50) C. P( z<-2.50) D. P(z > -2.50) 8. What is the probability that the customers occupying 25 tables would have an average time of less than 1 hour? A. 62% B. 0.62% C. 99% D. 0.99% For questions 9-12. The average time for a one-way trip for a student to go to school is 24 minutes with a standard deviation of 8 minutes. If a sample of 40 students is selected at random, what is the probability that the meantime to commute is faster than 20 minutes? 9. If the sample of 40 are repeatedly taken from the population, what is the approximate value of the mean of the sample means? A. 8 B. 20 C. 24 D. 40 moil slq

7. Which of the following probability notations represents the z-score? A. P(z>2.50) B. P(z<2.50) C. P( z<-2.50) D. P(z > -2.50) 8. What is the probability that the customers occupying 25 tables would have an average time of less than 1 hour? A. 62% B. 0.62% C. 99% D. 0.99% For questions 9-12. The average time for a one-way trip for a student to go to school is 24 minutes with a standard deviation of 8 minutes. If a sample of 40 students is selected at random, what is the probability that the meantime to commute is faster than 20 minutes? 9. If the sample of 40 are repeatedly taken from the population, what is the approximate value of the mean of the sample means? A. 8 B. 20 C. 24 D. 40 moil slq

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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4. Consider a normal population mean of 89 and population standard deviation of 63 Calculate the z-score for X-85 and n=25 A. 0.63 B. 3.17 C. -0.63 D. -3.17 For questions 5-8. A study shows that the normal time that a customer occupied a table in as dine restaurant is 1.2 hours with a standard deviation of 0.4 hour. A food entrepreneur want,e find the probability that customers occupying 25 tables would have an average time of less i 1 hour. 5. What is the value of the mean of the sample means? A. 0.3 В. 1 C. 1.2 D. 25 6. What is the value of the standard deviation of the sampling distribution? С. 1.2 D. 1 A. 0.08 В. О.4 7. Which of the following probability notations represents the z-score? A. P(z> 2.50) B. P(z<2.50) C. P( z<-2.50) D. P(z> -2.50) 8. What is the probability that the customers occupying 25 tables would have an average time of less than 1 hour? С. 99% D. 0.99% A. 62% В. 0.62% For questions 9-12. The average time for a one-way trip for a student to go to school is 24 minutes with a standard deviation of 8 minutes. If a sample of 40 students is selected at random, what is the probability that the meantime to commute is faster than 20 minutes? 9. If the sample of 40 are repeatedly taken from the population, what is the approximate value of the mean of the sample means? С. 24 D. 40 A. 8 В. 20 10. What is the value of the standard deviation of the sampling distribution? Grollol sdle A, 1.27 B. 2.58 С.4 D. 24 11. Which of the following probability notations represents the z-score? d lo sular sTt lo A. P(z<3.16) C. P(z<-3.16) 106 STATISTICS AND PROBABILITY A MODERN APPROACH FOR THE NEW GENERATION
Transcribed Image Text:4. Consider a normal population mean of 89 and population standard deviation of 63 Calculate the z-score for X-85 and n=25 A. 0.63 B. 3.17 C. -0.63 D. -3.17 For questions 5-8. A study shows that the normal time that a customer occupied a table in as dine restaurant is 1.2 hours with a standard deviation of 0.4 hour. A food entrepreneur want,e find the probability that customers occupying 25 tables would have an average time of less i 1 hour. 5. What is the value of the mean of the sample means? A. 0.3 В. 1 C. 1.2 D. 25 6. What is the value of the standard deviation of the sampling distribution? С. 1.2 D. 1 A. 0.08 В. О.4 7. Which of the following probability notations represents the z-score? A. P(z> 2.50) B. P(z<2.50) C. P( z<-2.50) D. P(z> -2.50) 8. What is the probability that the customers occupying 25 tables would have an average time of less than 1 hour? С. 99% D. 0.99% A. 62% В. 0.62% For questions 9-12. The average time for a one-way trip for a student to go to school is 24 minutes with a standard deviation of 8 minutes. If a sample of 40 students is selected at random, what is the probability that the meantime to commute is faster than 20 minutes? 9. If the sample of 40 are repeatedly taken from the population, what is the approximate value of the mean of the sample means? С. 24 D. 40 A. 8 В. 20 10. What is the value of the standard deviation of the sampling distribution? Grollol sdle A, 1.27 B. 2.58 С.4 D. 24 11. Which of the following probability notations represents the z-score? d lo sular sTt lo A. P(z<3.16) C. P(z<-3.16) 106 STATISTICS AND PROBABILITY A MODERN APPROACH FOR THE NEW GENERATION
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