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The local association of restaurants believes that the population proportion of households that eat out at least once a week might go down, after everything opens up again. It is planning another survey. In the pre- pandemic survey, the sample proportion of households that eat out at least once a week was 0.140. Use the past results and suppose that the next survey must have a margin of error of 0.050 in a 95% confidence interval for the population proportion. What is the smallest sample size that will get this margin of error?

The local association of restaurants believes that the population proportion of households that eat out at least once a week might go down, after everything opens up again. It is planning another survey. In the pre- pandemic survey, the sample proportion of households that eat out at least once a week was 0.140. Use the past results and suppose that the next survey must have a margin of error of 0.050 in a 95% confidence interval for the population proportion. What is the smallest sample size that will get this margin of error?

MATLAB: An Introduction with Applications
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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The local association of restaurants believes that the population proportion of households that eat out at least once a week might go down, after everything opens up again. It is planning another survey. In the pre- pandemic survey, the sample proportion of households that eat out at least once a week was 0.140. Use the past results and suppose that the next survey must have a margin of error of 0.050 in a 95% confidence interval for the population proportion. What is the smallest sample size that will get this margin of error?
Transcribed Image Text:The local association of restaurants believes that the population proportion of households that eat out at least once a week might go down, after everything opens up again. It is planning another survey. In the pre- pandemic survey, the sample proportion of households that eat out at least once a week was 0.140. Use the past results and suppose that the next survey must have a margin of error of 0.050 in a 95% confidence interval for the population proportion. What is the smallest sample size that will get this margin of error?
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