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?

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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Definition Definition Number of subjects or observations included in a study. A large sample size typically provides more reliable results and better representation of the population. As sample size and width of confidence interval are inversely related, if the sample size is increased, the width of the confidence interval decreases.

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