a) A company which produces electric appliance bulbs wishes to estimate the mean life of itsproduct. Construct a 95% confidence interval for the mean bulb lifetime if a random sampleof 35 bulbs revealed a mean of 1,075 hours. The company assumes the standard deviation oflifetimes is 40 hours. Round values to the nearest hour.b) How many bulbs would need to be sampled if we wish to estimate the true mean life towithin 10 hours with 95% confidence? Assume the standard deviation of lifetimes is 40hours.

a)GivenMean(x)=1075standard deviation(σ)=40sample size(n)=35confidence interval = 95%

Answered: a) A company which produces electric…

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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