3) Last year, the mean running time for a certain type of flash light battery was 8.5 hours. This year, the manufacturer hasintroduced a change in the production method which he hopes will change the mean running time. A random sampleof 40 of the new light bulbs was obtained and the mean running time was found to be 8.7 hours. Do the data providesufficient evidence to conclude that the mean running time of the new light bulbs is different from last year's mean of8.5 hours? Perform the appropriate hypothesis test using a significance level of 0.05. Assume that standard deviation ofrunning time of all new light bulb batteries of this type is 0.5 hours.

Sample mean=x̄=8.7, Population mean=μ=8.5 Population standard deviation=S=0.5 Sample size=0.5

Answered: 3) Last year, the mean running time for…

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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