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18. Find the probability that no more than 3 of the selected consumers believe that cash will be obsolete in the next 20 years.

18. Find the probability that no more than 3 of the selected consumers believe that cash will be obsolete in the next 20 years.

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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Help me answer 18, 20 and 22

**Cashless Society** **Context:** According to a survey by J.P. Morgan Chase, 40% of consumers believe that cash will be obsolete in the next 20 years. In each of the following exercises, assume that 8 consumers are randomly selected. The task is to find the indicated probability. 15. Find the probability that exactly 6 of the selected consumers believe that cash will be obsolete in the next 20 years. 16. Find the probability that at least 6 of the selected consumers believe that cash will be obsolete in the next 20 years. 17. Find the probability that fewer than 3 of the selected consumers believe that cash will be obsolete in the next 20 years. 18. Find the probability that no more than 3 of the selected consumers believe that cash will be obsolete in the next 20 years. 19. Find the probability that none of the selected consumers believes that cash will be obsolete in the next 20 years. 20. Find the probability that at least one of the selected consumers believes that cash will be obsolete in the next 20 years. --- **Human Resource Managers Scenario** **Context:** Assume that when human resource managers are randomly selected, 65% of them say that after submitting a résumé, job applicants should follow up within two weeks. 21. If 10 human resource managers are randomly selected, find the probability that exactly 6 of them say job applicants should follow up within two weeks. 22. If 16 human resource managers are randomly selected, find the probability that exactly 12 of them say job applicants should follow up within two weeks. 23. If 20 human resource managers are randomly selected, find the probability that at least 18 of them say job applicants should follow up within two weeks. 24. If 14 human resource managers are randomly selected, find the probability that fewer than 3 of them say job applicants should follow up within two weeks. --- **Case Study: Whitus v. Georgia** **Context:** In the classic legal case of *Whitus v. Georgia*, a jury pool of 90 people was supposed to be randomly selected from a population in which 27% were minorities. Among the 90 people selected, 7 were minorities. 25. Find the probability of getting 7 or fewer minorities if the jury pool was randomly selected. Is the result of 7 minorities significantly low? What does the result suggest about the jury selection process?
Transcribed Image Text:**Cashless Society** **Context:** According to a survey by J.P. Morgan Chase, 40% of consumers believe that cash will be obsolete in the next 20 years. In each of the following exercises, assume that 8 consumers are randomly selected. The task is to find the indicated probability. 15. Find the probability that exactly 6 of the selected consumers believe that cash will be obsolete in the next 20 years. 16. Find the probability that at least 6 of the selected consumers believe that cash will be obsolete in the next 20 years. 17. Find the probability that fewer than 3 of the selected consumers believe that cash will be obsolete in the next 20 years. 18. Find the probability that no more than 3 of the selected consumers believe that cash will be obsolete in the next 20 years. 19. Find the probability that none of the selected consumers believes that cash will be obsolete in the next 20 years. 20. Find the probability that at least one of the selected consumers believes that cash will be obsolete in the next 20 years. --- **Human Resource Managers Scenario** **Context:** Assume that when human resource managers are randomly selected, 65% of them say that after submitting a résumé, job applicants should follow up within two weeks. 21. If 10 human resource managers are randomly selected, find the probability that exactly 6 of them say job applicants should follow up within two weeks. 22. If 16 human resource managers are randomly selected, find the probability that exactly 12 of them say job applicants should follow up within two weeks. 23. If 20 human resource managers are randomly selected, find the probability that at least 18 of them say job applicants should follow up within two weeks. 24. If 14 human resource managers are randomly selected, find the probability that fewer than 3 of them say job applicants should follow up within two weeks. --- **Case Study: Whitus v. Georgia** **Context:** In the classic legal case of *Whitus v. Georgia*, a jury pool of 90 people was supposed to be randomly selected from a population in which 27% were minorities. Among the 90 people selected, 7 were minorities. 25. Find the probability of getting 7 or fewer minorities if the jury pool was randomly selected. Is the result of 7 minorities significantly low? What does the result suggest about the jury selection process?
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