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We Have Calculated a Confidence Interval Based Upon a Sample

Question 50

Multiple Choice

We have calculated a confidence interval based upon a sample of n = 200. Now we want to get a better estimate with a margin of error only one fifth as large. We need a new sample with n at least


A) 240
B) 5000
C) 1000
D) 40
E) 450

Correct Answer:

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