In order to determine the proportion of people who favor imposing sales tax for all Internet purchases, the minimum sample size needed for a precision level of 5 percent and a confidence level of 95 percent, is:

In order to determine the proportion of people who favor imposing sales tax for all Internet purchases, the minimum sample size needed for a precision level of 5 percent and a confidence level of 95 percent, is:



a.

666

b.

272

c.

384

d.

196

e.

100



Answer: C


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