In a survey, 1200 1200 adults in a certain country were asked how many hours they worked in the previous week. Based on the results, a 95% confidence interval for mean number of hours worked was lower bound: 37.8 37.8 and upper bound: 39.5 39.5. Which of the following represents a reasonable interpretation of the result? For those that are not reasonable, explain the flaw. Complete parts (a) through (d) below. (a) There is a 95% chance the mean number of hours worked by adults in this country in the previous week was between 37.8 37.8 hours and 39.5 39.5 hours. A. Flawed. This interpretation implies that the population mean varies rather than the interval. B. Correct. This interpretation is reasonable. C. Flawed. This interpretation makes an implication about individuals rather than the mean. D. Flawed. This interpretation implies that the mean is only for last week. Click to select your answer and then click Check Answer. 3
In a survey,
1200
1200 adults in a certain country were asked how many hours they worked in the previous week. Based on the results, a 95% confidence interval for
37.8
37.8 and upper bound:
39.5
39.5. Which of the following represents a reasonable interpretation of the result? For those that are not reasonable, explain the flaw. Complete parts (a) through (d) below.
(a) There is a 95% chance the mean number of hours worked by adults in this country in the previous week was between
37.8
37.8 hours and
39.5
39.5 hours.
A.
Flawed. This interpretation implies that the population mean varies rather than the interval.
B.
Correct. This interpretation is reasonable.
C.
Flawed. This interpretation makes an implication about individuals rather than the mean.
D.
Flawed. This interpretation implies that the mean is only for last week.
Click to select your answer and then click Check Answer.
3
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