Answered: 4) Consider a confidence level of 90%.…

4) Consider a confidence level of 90%. If n=68 and ?̂ = 0.42 Calculate the margin of error. 5) Consider a confidence level of 87%, let ? = 0.02 and ?̂ = 0.42. Find the sample size ?.

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

4) Consider a confidence level of 90%. If n=68 and ?̂ = 0.42 Calculate the margin of error.

5) Consider a confidence level of 87%, let ? = 0.02 and ?̂ = 0.42. Find the sample size ?.

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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