In a random sample of 17 people, the mean commute time to work was 32.8 minutes and the standard deviation was 72 minutes. Assume the population is normally distributed and use a t-distribution to construct a 80% confidence interval for the population mean u What is the margin of error of u? Interpret the results The confidence interval for the population mean u is D (Round to one decimal place as needed.) The margin of error of u is (Round to one decimal place as needed.) Interpret the results. O A. If a large sample of people are taken approximately 80% of them will have commute times between the bounds of the confidence interval. O B. With 80% confidence, it can be said that the population mean commute time is between the bounds of the confidence interval. OC. It can be said that 80% of people have a commute time between the bounds of the confidence interval.

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In a random sample of 17 people, the mean commute time to work was 32.8 minutes and the standard deviation was 7.2 minutes. Assume the population is normally distributed and use a t-distribution to construct a 80% confidence interval for the population
mean p What is the margin of error of p? Interpret the results.
The confidence interval for the population mean µ is ( ).
CD
(Round to one decimal place as needed.)
The margin of error of u is
(Round to one decimal place as needed.)
Interpret the results.
O A. If a large sample of people are taken approximately 80% of them will have commute times between the bounds of the confidence interval.
O B. With 80% confidence, it can be said that the population mean commute time is between the bounds of the confidence interval.
C. It can be said that 80% of people have a commute time between the bounds of the confidence interval.
O D. With 80% confidence, it can be said that the commute time is between the bounds of the confidence interval.
Transcribed Image Text:In a random sample of 17 people, the mean commute time to work was 32.8 minutes and the standard deviation was 7.2 minutes. Assume the population is normally distributed and use a t-distribution to construct a 80% confidence interval for the population mean p What is the margin of error of p? Interpret the results. The confidence interval for the population mean µ is ( ). CD (Round to one decimal place as needed.) The margin of error of u is (Round to one decimal place as needed.) Interpret the results. O A. If a large sample of people are taken approximately 80% of them will have commute times between the bounds of the confidence interval. O B. With 80% confidence, it can be said that the population mean commute time is between the bounds of the confidence interval. C. It can be said that 80% of people have a commute time between the bounds of the confidence interval. O D. With 80% confidence, it can be said that the commute time is between the bounds of the confidence interval.
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