7. A manufacturer says that the standard deviation of the strength of wrappingcord is 9 pounds. A sample of 10 wrapping cords produces a variance of 121.At a = 0.05, test the claim that it is greater than 9 pounds.

We have given that Sample size n =10 Population standard deviation =9 Sample variance =121

Answered: A manufacturer says that the standard…

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 manufacturer says that the standard deviation of the strength of wrapping cord is 9 pounds. A sample of 10 wrapping cords produces a variance of 121. At a = 0.05, test the claim that it is greater than 9 pounds.