Answered: If you want to be 95% confident of…

If you want to be 95% confident of estimating the population mean to within a sampling error of ±2 and the standard deviation is assumed to be 18, what sample size is required?

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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Question

If you want to be

95%

confident of estimating the population mean to within a sampling error of

±2

and the standard deviation is assumed to be

18,

what sample size is required?

Question content area bottom

Part 1

The sample size required is

enter your response here.

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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