The Platters, a rock-and-roll group that had many hits in the late 1950s, has undergone many personnel changes since that era. However, a group performing under that name is still touring the country...

The Platters, a rock-and-roll group that had many hits in the late 1950s, has undergone many personnel changes since that era. However, a group performing under that name is still touring the country giving concerts. The group would like to stop in Detroit, Michigan, on its current tour. An “oldies” radio station, WDMI, is in charge of making the arrangements.

 The station has listed activities that must be completed prior to the concert in the table for problem 16. Times are in weeks.

a. Give an estimated completion time for this project.

 b. Which activities have the most slack?

 c. What is the probability that the project will be completed in 12 weeks? d. Give a time within which the station can be 99% sure of completing the project.