A competitor of kozar international inc. has begun marketing a new instant-developing film project. kozar has had a similar product under study in its research and developmet (r&d) department but has not yet been able to begin production. because of the competitor's action, top managers have asked for a speedup of r&d activities so that kozar can produce and market instant film at the earliest possible date. the predecessor information and activity time estimates in months are as follows:
activity immediate predecessors optimistic time most probable time pessimistic time
a - 1 1.5 5
b a 3 4 5
c a 1 2 3
d b , c 3.5 5 6.5
e b 4 5 12
f c, d, e 6.5 7.5 11.5
g e 5 9 13
a. draw the project network
b. develop an activity schedule for this project using early and late start and finish times, compute activity slack time, and define the critical activities