As a class project you have been asked to project the proportion of time a professor spends on various activities. You have decided to use the work-sampling method. Your initial observations are shown. You are instructed that your estimates are to be within 5 percent of the true value with 97 percent confidence (z = 2.17).

A. based on your initial observations, how many total observations are needed to estimate the proportion of time the professor spends on each activity?

B. Determine what proportion of time the professor spends teaching class

C. Determine what proportion of time the professor spends working on research

D. If the professor works approximately 54 hours per wk, determine the amount of time that would normally be spent on each activity.

PLEASE ANSWER A THROUGH D