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1. Activity I.P Optimistic A Most likely 25 Pessimistic 13 A 12 5 A 30 2 A, B 8 7 A, C, D 11 14 E 15 19 D,F 23 E. F 17 29 H 21 15 25 5 The value of pessimistic is you have to find; 1) First three values are 55% of optimistic values. 2) Next two values are 70% of optimistic values. Next 2 values are the 83% of first two optimistic value. 4) Last 3 values are 90% of most likely values. Find value of t and variance Solve it on software