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[Solved]: We want to know the sample size necessary to be 90
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(Solved): We want to know the sample size necessary to be 90% confident that the proportion margin of error is ...



We want to know the sample size necessary to be 90% confident that the proportion margin of error is within 3 percentage points. What is that sample size?

a)1068
b)752
c)457
d0Cannot be determined


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