A researcher wants to estimate the proportion of electric car owners in Los Angeles County. The researcher feels that 10% of car owners own an electric car. The researcher wants his estimate to be within a 5% margin of error at a 90% confidence level. What sample size will he need? Please show all step

A researcher wants to estimate the proportion of electric car owners in Los Angeles County. The researcher feels that 10% of car owners own an electric car. The researcher wants his estimate to be within a 5% margin of error at a 90% confidence level. What sample size will he need? Please show all step

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

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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