I chose b. but it is incorrect on the quiz I took.

A manager is asked to estimate the most likely level of next month's sales. She is then asked to make (1) a pessimistic estimate, and (2) an optimistic estimate such that there is a 99% probability that the actual sales will fall in the interval between the pessimistic and the optimistic estimates. According to research this interval is most likely to be:

Select one:

a. about the right width

b. too wide

c. too narrow

d. too narrow to include the most likely estimate