Use the given degree of confidence and sample data to construct a confidence interval for the population proportion p.
-Of 118 randomly selected adults, 34 were found to have high blood pressure. Construct a 95% confidence interval for the true percentage of all adults that have high blood pressure.
A) 18.1%

Question

Use the given degree of confidence and sample data to construct a confidence interval for the population proportion p.
-Of 118 randomly selected adults, 34 were found to have high blood pressure. Construct a 95% confidence interval for the true percentage of all adults that have high blood pressure.
A) 18.1% < p < 39.6%
B) 21.9% < p < 35.7%
C) 20.6% < p < 37.0%
D) 19.1% < p < 38.5%

Quizplus · Accepted Answer

The sample proportion is 34/118 = 0.2881. Using a 95% confidence level, the confidence interval is calculated using the formula for a proportion confidence interval, resulting in approximately 20.6% to 37.0%.

Use the Given Degree of Confidence and Sample Data to Construct