In a Time Magazine/Aspen poll of American adults conducted by the strategic research firm Penn Schoen Berland, these adults were asked, “In your opinion, what is more important for the U.S. to focus on in the next decade?” Eighty-three percent of the adults polled said domestic issues (Time, July 11, 2011). Assume that this percentage is true for the current population of American adults. Let p̂ be the proportion in a random sample of 1000 American adults who hold the above opinion. Find the mean and standard deviation of the sampling distribution of p̂ and describe its shape.
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