In a random sample of 18 people, the mean commute time to work was 32.6 minutes and the standard deviation was 7.1 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. With 80% confidence, it can be said that the population mean commute time is betwren the bounds of the confidence interval. B. It can be said that 80% of people have a commute time between the bounds of the co Question Viewer O C. If a large sample of people are taken approximately 80% of them will have commute times 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. O00

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In a random sample of 18 people, the mean commute time to work was 32.6 minutes and the standard deviation was 7.1 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 u? Interpret the results.
The confidence interval for the population mean p is
(Round to one decimal place as needed.)
The margin of error of u is
(Round to one decimal place as needed.)
Interpret the results.
A. With 80% confidence, it can be said that the population mean commute time is betwren the bounds of the confidence interval.
B. It can be said that 80% of people have a commute time between the bounds of the co Question Viewer
O C. If a large sample of people are taken approximately 80% of them will have commute times 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.
Click to select your answer(s).
0 耳@
Transcribed Image Text:In a random sample of 18 people, the mean commute time to work was 32.6 minutes and the standard deviation was 7.1 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 u? Interpret the results. The confidence interval for the population mean p is (Round to one decimal place as needed.) The margin of error of u is (Round to one decimal place as needed.) Interpret the results. A. With 80% confidence, it can be said that the population mean commute time is betwren the bounds of the confidence interval. B. It can be said that 80% of people have a commute time between the bounds of the co Question Viewer O C. If a large sample of people are taken approximately 80% of them will have commute times 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. Click to select your answer(s). 0 耳@
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