Answered: An inventor has developed a new,…

Name: An inventor has developed a new, energy-efficient battery for an iPod
Uploaded: 2024-03-20T07:07:12.000Z
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Description: An inventor has developed a new, energy-efficient battery for an iPod speaker. He claims that the battery will run continuously for 5 hours (300 minutes) on a single charge. From his stock of 2000 batteries, the inventor selects a simple random sampl

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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An inventor has developed a new, energy-efficient battery for an iPod speaker. He claims that the battery will run continuously for 5 hours (300 minutes) on a single charge. From his stock of 2000 batteries, the inventor selects a simple random sample of 50 batteries for testing. The batteries run for an average of 295 minutes, with a standard deviation of 20 minutes. Test the null hypothesis that the mean run time is 300 minutes. Use a 0.05 level of significance.

since the standard deviation was provided, I assumed that the it could be solved using the Z value.

Would that be the case? or should I solve using a t-test?

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