Population Proportion

Question

Use the given degree of confidence and sample data to construct a confidence interval for the population proportion p.
n = 51, x = 27; 95% confidence (Points : 5)

0.414 < p < 0.644

0.392 < p < 0.666

0.391 < p < 0.667

0.413 < p < 0.645
 

Question

Use the given data to find the minimum sample size required to estimate the population proportion.
Margin of error: 0.004; confidence level: 95%; unknown (Points : 5)

60,148

60,018

60,025

50,024
 

Question

Solve the problem. Round the point estimate to the nearest thousandth.
Find the point estimate of the proportion of people who wear hearing aids if, in a random sample of 304 people, 20 people had hearing aids. (Points : 5)
0.063
0.066
0.934
0.062