A researcher makes a research about the life time of batteries which have a normal distribution with mean of 50 hours and variance of 9 hours. In order to understand the life time of batteries s/he randomly selected 9 batteries and calculate the sample mean as 48 hours and standard deviation of 5 hours. Construct 90 % confidence interval for the true population mean of life time of batteries. (46.04, 49.96) O (47.09 , 48.91) 38310 (46.61 , 49.39) P (46.36 , 49,65)

A researcher makes a research about the life time of batteries which have a normal distribution with mean of 50 hours and variance of 9 hours. In order to understand the life time of batteries s/he randomly selected 9 batteries and calculate the sample mean as 48 hours and standard deviation of 5 hours. Construct 90 % confidence interval for the true population mean of life time of batteries. (46.04, 49.96) O (47.09 , 48.91) 38310 (46.61 , 49.39) P (46.36 , 49,65)

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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