For numbers 31-37, refer to the given problem.The average time it takes for a group of college students to complete a certain examination is46.2 minutes whereas the standard deviation is 8 minutes. Fifty college students were randomly selected totake the examination. Assume that the variable is normally distributed. What is the probability that the meantime it takes for the group to complete the test will be less than 43 minutes?31. What is the population mean u?B. 43A. 8C. 46.2D. 5032. What is the population standard deviation a?А. 8В. 43C. 46.2D. 5033. What is the sample size n?А. 8B. 43C. 46.2D. 5034. What is asked in the given problem?A. P(X < 43)B. P(<43)C. P(X>43)D. P(>43)35. What formula is to be used in finding the z-score?D. z = X-4VILH-XB. Z =X-C. z = -8A. z =of36. What is the answer to the question?В. 15.54%A. 0.23%С. 23%D. 34.46%

Given that Mean=46.2 Standard deviation=5 Sample size=50 Note: According to bartleby experts…

Answered: 31. What is the population mean u? В.…

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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31. What is the population mean u? В. 43 A. 8 C. 46.2 D. 50 32. What is the population standard deviation a? A. 8 В. 43 C. 46.2 D. 50 33. What is the sample size n? A. 8 В. 43 C. 46.2 D. 50