Find the sample size needed to estimate the mean age of movie patrons such that it can be said with 90​% confidence that the sample mean is within 1 year of the population mean. Assume that =19.3 ​years, based on a previous report. Could the sample be obtained from one movie at one​ theater?

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Find the sample size needed to estimate the mean age of movie patrons such that it can be said with 90​% confidence that the sample mean is within 1 year of the population mean. Assume that =19.3 ​years, based on a previous report. Could the sample be obtained from one movie at one​ theater?

THe required sample size is?

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