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Name: 4. HSD Power Company claims that the mean battery life of their MP5 pl
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Description: 4. HSD Power Company claims that the mean battery life of their MP5 player is 33.3 hours. Christina, a local consumer watchdog, does not believe that the company is being truthful. She collected 33 MP5 manufactured by HSD and computed a mean battery

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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4. HSD Power Company claims that the mean battery life of their MP5 player is 33.3 hours. Christina, a local consumer watchdog, does not believe that the company is being truthful. She collected 33 MP5 manufactured by HSD and computed a mean battery span of 30.2 hours. The population standard deviation was previously tabulated and is believe to be 1.75 hours. Is there enough evidence to reject the claim at α=0.02?

a. Set up the Hypotheses and indicate the claim

H₀:

H_a:

b. Decision rule. please show rejected region

c. Computation

d Decision

e. Interpretation

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