Suppose a 99% confidence interval for the mean weight of high school girls (in pounds)is calculated as (102.3,106.5).If we had measured the weights of each of the girls in kilograms (2.2 pounds = 1 kilogram),then the confidence interval for the mean weight of high school girls in kilograms would have been
A)(104.5,108.7).
B)(46.5,48.4).
C)(225.06,234.3).
D)(100.1,104.3).

Question

Quizplus · Accepted Answer

To convert the confidence interval from pounds to kilograms, divide each bound by 2.2 (since 2.2 pounds = 1 kilogram). Thus, (102.3 / 2.2, 106.5 / 2.2) = (46.5, 48.4).

Suppose a 99% Confidence Interval for the Mean Weight of High