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If I have a sample of 200 randomly selected people in a city of whom 120...

If I have a sample of 200 randomly selected people in a city of whom 120 are Christians, what would be a 95% confidence interval for the proportion of Christians in that city? If I want my confidence interval with a margin of error of 1% or less, how many people should I have in my sample? please show in excel in with formulas

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Answer #1



n = 200



Lower Limit =
upper Limit =
95% Confidence interval is ( 0.5321 , 0.6679 )
( 0.5321 < P < 0.6679 )






n = 9220

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