SOLUTION: 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 sa

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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?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi  

n = %28z%2FME%29%5E2+%28p%281-p%29%29%29

n = (2.576/.05)^2(.19)(.81) round UP to a whole number

 = CI	z = value

90%	z =1.645

92%	z = 1.751

95%	z = 1.96

98%	z = 2.326

99%	z = 2.576