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A member of the city government thinks that 90 percent confidence isn't enough. He wants to be 99 percent confident. How would the margin of error of a 99 percent confidence interval based on the same sample compare with the 90 percent interval found in the previous question?

A member of the city government thinks that 90 percent confidence isn't enough. He wants to be 99 percent confident. How would the margin of error of a 99 percent confidence interval based on the same sample compare with the 90 percent interval found in the previous question?

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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A member of the city government thinks that 90 percent confidence isn't enough. He wants to be 99 percent confident. How would the margin of error of a 99 percent confidence interval based on the same sample compare with the 90 percent interval found in the previous question?

A) it would be the same becuase the sample is the same

B) it would be larger becuase higher confidence requires a larger margin of error

C)It would be smaller becuase it omits only 1% of the possible samples instead of 10%

D) it is impossible to tell unless a census is taken

E) it is impossible to tell becuase the margin of error is random

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