A professor claims that he writes his exams so well that the average is never lessthan 85 points. He takes a random sample of 14 exams, and finds that the average is82 points with a standard deviation of 12 points. Is his claim accurate? Test this claimat a 5% level of significance.

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Answered: A professor claims that he writes his…

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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A professor claims that he writes his exams so well that the average is never less than 85 points. He takes a random sample of 14 exams, and finds that the average is 82 points with a standard deviation of 12 points. Is his claim accurate? Test this claim at a 5% level of significance.