You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately 67%. You would like to be 90% confident that your estimate is within 1.5% of the true population proportion. How large of a sample size is required? Hint: Video [+1
You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately 67%. You would like to be 90% confident that your estimate is within 1.5% of the true population proportion. How large of a sample size is required? Hint: Video [+1
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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Step 1
Given Information:
Population proportion p = 67% = 0.67
Confidence level = 90% = 0.90
Margin of Error = 1.5%=0.015
Formula used to calculate sample size is given below:
Z-critical value for 90% confidence level is 1.645
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