In asurvey, 900

900 adults in a certain country were asked how many hours they worked in the previous week. Based on theresults, a95% confidence interval for mean number of hours worked was lowerbound: 37.2

37.2 and upperbound: 42.9

42.9. Which of the following represents a reasonable interpretation of theresult? For those that are notreasonable, explain the flaw.

(a) There is a95% chance the mean number of hours worked by adults in this country in the previous week was between 37.2

37.2 hours and 42.9

42.9 hours.

A.Flawed. This interpretation implies that the mean is only for last week.

B.Flawed. This interpretation makes an implication about individuals rather than the mean.

C.Flawed. This interpretation implies that the population mean varies rather than the interval.

D.Correct