Mullins Stanley

07/26/2024 · Middle School

In a random sample of 20 people, the mean commute time to work was 34.8 minutes and the standard deviation was 7.2 minutes. Assume the population is normally distributed and use a t-distribution to construct a \( 98 \% \) confidence interval for the population mean \( \mu \). What is the margin of error of \( \mu \) ? Interpret the results. The confidence interval for the population mean \( \mu \) is ( (Round to one decimal place as needed.) The margin of error of \( \mu \) is (Round to one decimal place as needed.) Interpret the results. B. With \( 98 \% \) confidence, it can be said that the population mean commute time is between the bounds of the confidence interval. C. With \( 98 \% \) confidence, it can be said that the commute time is between the bounds of the confidence interval. D. If a large sample of people are taken approximately \( 98 \% \) of them will have commute times between the bounds of the confidence interval.