Answered: Suppose you are a stock control manager…

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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Suppose you are a stock control manager of a company, which is a large buyer of car batteries. There are two possible types of batteries to purchase and you need to make a decision between them. You want to decide which one of two equally priced brands to purchase at the 5 percent level of significance.

To do this, you take a random sample of 100 batteries of each brand and find that brand 1 lasts 1060 hours on the average, with a sample standard deviation of 90 hours. Brand 2 on the other hand had an average of 1100 hours and with standard deviation 140 hours. At 0.05 and 0.01 significance level state which brand you are likely to purchase if you want to reach a decision.

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