Use the given data to construct a 99.5% confidence interval for the population proportion p.=x52, =n71Round the answer to at least three decimal places.Theconfidenceintervalis, .
Question
Use the given data to construct a 99.5% confidence interval for the population proportion p.=x52, =n71Round the answer to at least three decimal places.Theconfidenceintervalis, .
Solution
To construct a 99.5% confidence interval for the population proportion p, we first need to calculate the sample proportion (p̂) and then use the formula for the confidence interval for a proportion.
Step 1: Calculate the sample proportion (p̂) p̂ = x/n = 52/71 ≈ 0.732
Step 2: Determine the z-score for a 99.5% confidence interval. The z-score for a 99.5% confidence interval is 2.807 (you can find this value in a standard z-table or using a calculator).
Step 3: Use the formula for the confidence interval for a proportion, which is p̂ ± Z * √[(p̂(1 - p̂) / n].
Substituting the values we have:
0.732 ± 2.807 * √[(0.732 * (1 - 0.732) / 71]
After calculating the above expression, you will get the lower and upper limits of the confidence interval. Remember to round your answer to at least three decimal places.
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