5. An electrical firm manufactures flashlight that have length of life that is normallydistributed, with a standard deviation of 35 hours. If a random sample of 150 flashlightshas a mean life of 480 hours, construct a 99% confidence interval for the mean of theflashlights produced by the firm.

here population standard deviation = 35 sample size = 150 sample mean = 480 and Z-critical for…

Answered: has a mean life of 480 hours, construct…

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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has a mean life of 480 hours, construct a 99% confidence interval for the mean of the flashlights produced by the firm.