Activity Shannon is at the fair. She has already been on a couple of rides, and now she has only 13 tickets left. She wants to use her tickets wisely to get
the maximum ride time with her remaining tickets. She wants to find the rates (ride time per ticket) of the different rides in the fair. This table
shows the cost, in tickets, and the ride time for the six rides at the fair:

Using pert, adam munson was able to determine that the expected project completion time for the construction of a pleasure yacht is 21 months, and the project variance is 4. a) what is the probability that the project will be completed in 17 months? b) what is the probability that the project will be completed in 20 months? c) what is the probability that the project will be completed in 23 months? d) what is the probability that the project will be completed in 25 months? e) what is the due date that yields a 95% chance of completion?