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A 95% confidence interval for p has sampling error SE=.06. Find the approximate sample size required...

A 95% confidence interval for p has sampling error SE=.06. Find the approximate sample size required to construct this interval if:

a. p is near .4

b. you have no prior knowledge about p, but you wish to be certain that your sample is large enough to achieve the specified accuracy for the estimate.

Math   Statistics-And-Probability   
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