The Average Weight of a Sample of Women Who Attend $\pm$

Multiple Choice

The average weight of a sample of women who attend aerobics classes at the YWCA is 130 pounds.We construct a confidence interval (using an alpha of 0.05) of $\pm$ 3.45.The upper and lower limits of our estimate are

A) 130.00 and 133.45.
B) 126.55 and 130.45.
C) 126.55 and 133.45.
D) unknown;these values will depend on the number of women who are truly serious about exercising.