In a survey of 645 males ages? 18-64, 394 say they have gone to the dentist in the past year.
Construct? 90% and? 95% confidence intervals for the population proportion. Interpret the results and compare the widths of the confidence intervals. If? convenient, use technology to construct the confidence intervals.
The? 90% confidence interval for the population proportion p is
The? 95% confidence interval for the population proportion p is
Interpret your results of both confidence intervals.
Which interval is? wider?