document.write( "Question 1058077: The estimate of the population proportion is to be within plus or minus 0.05, with a 99% level of confidence. The best estimate of the population proportion is 0.19. How large a sample is required? \n" ); document.write( "

Algebra.Com's Answer #673102 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi  
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document.write( "n = 
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document.write( "n = (2.576/.05)^2(.19)(.81) round UP to a whole number
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document.write( " = CI	z = value
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document.write( "90%	z =1.645
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document.write( "92%	z = 1.751
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document.write( "95%	z = 1.96
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document.write( "98%	z = 2.326
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document.write( "99%	z = 2.576
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