document.write( "Question 1177252: In a Gallup-type poll, 1080 randomly selected adults were surveyed and 28% of them said that they used the Internet for shopping at least a few timesa year. Construct a 99% confidence interval for the true proportion of adults who shop on the Internet at least a few times a year. \n" ); document.write( "
Algebra.Com's Answer #805575 by ewatrrr(24785)\"\" \"About 
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document.write( "ME = \"z%2Asqrt%28%28p%281-p%29%29%2Fn%29\"\r\n" );
document.write( "z = 2.576\r\n" );
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document.write( "ME = \"2.576%2Asqrt%28%28.28%28.72%29%29%2F1080%29\" = .035\r\n" );
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document.write( ".28 - .035 < \"mu\" < .28 + .035\r\n" );
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document.write( "CI: (.245, .315)\r\n" );
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document.write( "Wish You the Best in your Studies.\r\n" );
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