In a survey of 662 males ages 18-64, 397 say they have gone to the dentist...
In a survey of 662 males ages 18-64, 397 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 ( nothing, nothing). (Round to three decimal places as needed.) The 95% confidence interval for the population proportion p is ( nothing, nothing). (Round to three decimal places as needed
Homework Answers
Sample proportion = 397/662 = 0.5997
Margin of error for 90% Interval = 
= 0.0313
90% Interval
(0.5997-0.0313, 0.5997+0.0313)
= (0.568, 0.631)
Confidence Interval for 95%
Margin of error for 95% Interval = 
= 0.0373
95% Interval
(0.5997-0.0373, 0.5997+0.0373)
= (0.562, 0.637)
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In a survey of 662 males ages 18-64, 397 say they have gone to
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In a survey of 639 males ages 18-64, 398 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 ( nothing, nothing). (Round to three decimal places as needed.) The 95% confidence interval for the population proportion p is...
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