A political candidate has asked you to conduct a poll to determine what percentage of people support her. If the candidate only wants a 2.5% margin of error at a 95% confidence level, what size of sample is needed? When finding the z-value, round it to four decimal places. Hint: Video [+]

A political candidate has asked you to conduct a poll to determine what percentage of people support her. If the candidate only wants a 2.5% margin of error at a 95% confidence level, what size of sample is needed? When finding the z-value, round it to four decimal places. Hint: Video [+]

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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A political candidate has asked you to conduct a poll to determine what percentage of people support him. If the candidate only wants a 5% margin of error at a 90% confidence level, what size of sample is needed? When finding the z-value, round it to four decimal places.
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