Mathematics, 11.11.2019 23:31, tariqobrien6241
In a random sample of 28 people, the mean commute time to work was 34.3 minutes and the standard deviation was 7.2 minutes. assume the population is normally distributed and use a t-distribution to construct a 99% confidence interval for the population mean μ. what is the margin of error of μ? interpret the results.
-the confidence interval for the population mean μ is ( , )?
-the margin of error of μ is ( , )?
-interpret the resluts.
a. with 99% confidence, it can be said that the population mean commute time is between the bounds of the confidence interval.
b. with 99% confidence, it can be said that the commute time is between the bounds of the confidence interval.
c. if a large sample of people are taken approximately 99% of them will have commute times between the bounds of the confidence interval.
d. it can be said that 99% of people have a commute time between the bounds of the confidence interval.
Answers: 2
Mathematics, 21.06.2019 19:30, allicat133
Awater holding tank measures 105 m long, 50 m wide, and 8 m deep. traces of mercury have been found in the tank, with a concen- tration of 60 mg/l. what is the total mass of mercury in the tank? answer in units of kg.
Answers: 1
In a random sample of 28 people, the mean commute time to work was 34.3 minutes and the standard dev...
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