PLEASE JUST WRITE THE ANSWERS I DO NOT NEED AN EXPLANATION T

PLEASE JUST WRITE THE ANSWERS, I DO NOT NEED AN EXPLANATION THANK YOU

Problem 12-09 (Algorithmic) A project has four activities (A, B, C, and D) that must be performed sequentially. The probability distributions for the time required to complete each of the activities are as follows: Activity Time (weeks) 4 Activity Probability 0.31 0.39 0.27 0.03 0.19 0.54 0.27 0.11 0.21 0.43 0.17 0.08 7 9 13 0.70 0.30

Solution

a.)Activity A:

Base case:4*0.31,Worst case:7*0.03,Best case:1.95

Activity B:

Base case:1.89,Worst case:0.57,Best case:2.7

Activity C:

Base case:1.47    Worst case: 0.55       Best case:3.87

Activity D:

Base case: 3.3    Worst case:3.3        Best case:6.3

TOTAL OF BASE CASE:7.9;TOTAL OF WORST CASE:4.63;TOTAL OF BEST CASE:14.82

B)A=22weeks,B=15 weeks,C=45 weeks,D=20 weeks,total=102 weeks