A political candidate has asked you to conduct a poll to determine what percentage of people support her. If the candidate only wants a 8% margin of error at a 90% confidence level, what size of sample is needed? What value did you use for ˆpp^ ? Why did you choose that value?

A political candidate has asked you to conduct a poll to determine what percentage of people support her. If the candidate only wants a 8% margin of error at a 90% confidence level, what size of sample is needed? What value did you use for ˆpp^ ? Why did you choose that value?

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 random sample of n1 = 299 voters registered in the state of California showed that 146 voted in the last general election. A random sample of n2 = 211 registered voters in the state of Colorado showed that 120 voted in the most recent general election. Do these data indicate that the population proportion of voter turnout in Colorado is higher than that in California? Use a 5% level of significance. I need help with the wrong ones. level of Significance: .05 | H0: p1 = p2; H1: p1 < p2 |
A political candidate has asked you to conduct a poll to determine what percentage of people support her, assume p=.5.If the candidate only wants a 2% margin of error at a 90% confidence level, what size of sample is needed?
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