You wish to compute the 95% confidence interval for the population proportion. How large a sample should you draw to ensure that the sample proportion does not deviate from the population proportion by more than 0.12? No prior estimate for the population proportion is available. (You may find it useful to reference the z table. Round intermediate calculations to at least 4 decimal places and "z" value to 3 decimal places. Round up your answer to the nearest whole number.) What would the sample size be?
Added by Allen R.
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5 as the estimate for the population proportion. This is because 0.5 maximizes the sample size. Second, we need to know the z value for a 95% confidence interval. From the z table, we can find that the z value is approximately 1.96. Third, we can use the formula Show more…
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