document.write( "Question 1061352: Minimum sample size you should use to assure that your estimate of ^p will be within the required margin of the population p.\r
\n" ); document.write( "\n" ); document.write( "Margin of error: 0.04; confidence level: 90%; from a prior study, ^p is estimated by 0.27. Let z=1.645\r
\n" ); document.write( "\n" ); document.write( "A) 13
\n" ); document.write( "B) 334
\n" ); document.write( "C) 296
\n" ); document.write( "D) none of these
\n" ); document.write( "E) 1002
\n" ); document.write( "

Algebra.Com's Answer #676135 by MathTherapy(10557)\"\" \"About 
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\n" ); document.write( "Minimum sample size you should use to assure that your estimate of ^p will be within the required margin of the population p.\r
\n" ); document.write( "\n" ); document.write( "Margin of error: 0.04; confidence level: 90%; from a prior study, ^p is estimated by 0.27. Let z=1.645\r
\n" ); document.write( "\n" ); document.write( "A) 13
\n" ); document.write( "B) 334
\n" ); document.write( "C) 296
\n" ); document.write( "D) none of these
\n" ); document.write( "E) 1002
\n" ); document.write( "
Both z = 1.645, and confidence level: 90% are not needed. Just 1 is fine.
\n" ); document.write( "With estimated proportion, or p̂ being 0.27, sample size for the proportion, or: \n" ); document.write( "
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