Find the sample size needed to estimate the mean age of movie patrons such that it can be said with 95% confidence that the sample mean is within 1.5 years of the population mean. Assume that σ=19.4 ​years, based on a previous report. Should the sample be obtained from one movie at one​ theater?

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Find the sample size needed to estimate the mean age of movie patrons such that it can be said with 95% confidence that the sample mean is within 1.5 years of the population mean. Assume that σ=19.4 ​years, based on a previous report. Should the sample be obtained from one movie at one​ theater?

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