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What Influences the Sample Size? We examine the effect of different inputs on determining the sample...

What Influences the Sample Size? We examine the effect of different inputs on determining the sample size needed to obtain a specific margin of error when finding a confidence interval for a proportion.

Find the sample size needed to give, with 95% confidence, a margin of error within ± 6% when estimating a proportion. Within ± 4% . Within ± 1% . (Assume no prior knowledge about the population proportion p .) Round your answers up to the nearest integer.

Margin of Error Sample Size

6% :

4% :

1% :

Math   Statistics-And-Probability   
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