Thursday

August 28, 2014

August 28, 2014

Posted by **John** on Saturday, March 29, 2014 at 12:59pm.

If all else remains the same, which of these will make a confidence interval for a proportion

narrower?

I. Increase the confidence level.

II. Increase the sample size.

III. Increase the margin of error.

A. I only

B. II only

C. I and II

D. I and III

E. I, II, and III

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