Thursday
August 21, 2014

Homework Help: Statistics

Posted by Adam Dane on Sunday, March 31, 2013 at 3:10pm.

Suppose the U.S. president wants an estimate of the proportion of the population who support his current policy toward revisions in the Social Security system. The president wants the estimate to be within 0.028 of the true proportion. Assume a 99 percent level of confidence. The president's political advisers estimated the proportion supporting the current policy to be 0.62

(a) How large of a sample is required?

(b) How large of a sample would be necessary if no estimate were available for the proportion that support current policy?

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