A survey is being planned to determine the mean amount of time children watch television. A pilot survey indicated that the mean time is 18 hours with a standard deviation of 2.2 hours. It is desired to estimate the mean viewing time with an error of .25 hours. How many children would have to be sampled if a 95% confidence interval is desired?

A survey is being planned to determine the mean amount of time children watch television. A pilot survey indicated that the mean time is 18 hours with a standard deviation of 2.2 hours. It is desired to estimate the mean viewing time with an error of .25 hours. How many children would have to be sampled if a 95% confidence interval is desired?

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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