Question: Activity a m b Immediate Predecessor(s) A 2 6 8 - B 10 11 12 - C 1 2 3 - D 6 7 8

Activity a m b Immediate Predecessor(s) A 2 6 8 - B 10 11 12 - C 1 2 3 - D 6 7 8 C E 2 4 6 B, D F 1 2 3 A, E G 7 11 13 A, E H 11 12 13 F I 5 7 9 G J 14 16 18 C K 4 8 12 H, I

a) find expected time and variance

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