Solved: Question 1 A project is made of the following activities: Duratio Pred

Question

Question 1 A project is made of the following activities: Duratio Predecessor ES EF LS LF slac Task n (s) k A 2 - BCDEFG 20 A с 5 A 20 C 17 B,C,D 11 D 2 E,F 1. Complete the table above - ES, EF, LS, LF, Slack 2. What is the critical path? What is the project duration? 3. Refer to the critical path you found in 2. Assume that every activity is normally distributed. Each activity's mean is given in the table above. Each activity's standard deviation is 20% of its mean (for example, the mean duration of activity A is 2 and its standard deviation is 0.4). What is the probability that the project will last more than 48 days? Z F(x) Z F(x) -2.5 0.006 -1 0.159 -2.4 0.008 -0.9 0.184 -2.3 0.011 -0.8 0.212 Nood Z F(x) 0.5 0.691 0.6 0.726 0.7 0.758 -2.2 0.014 -0.7 0.242 0.8 0.788 -2.1 0.018 -0.6 0.274 0.9 0.816 -2 0.023 -0.5 0.309 1 0.841 -1.9 -1.8 -1.7 -1.6 -1.5 -1.4 -1.3 -1.2 -1.1 0654321 0.029 -0.4 0.345 1.1 0.864 0.036 -0.3 0.382 1.2 0.885 0.045 -0.2 0.421 1.3 0.903 0.056 -0.1 0.46 1.4 0.919 0.067 0 05 1.5 0.933 0.081 0.1 0.54 1.6 0.945 0.097 0.2 0.115 0.136 DO 0.3 0.4 234 0.579 1.7 0.955 0.618 1.8 0.964 0.655 1.9 0.971