Optimistic (days) 2 11 3 D 3 E 1 a. Calculate the expected time, t, for each activity. (Enter your responses rounded to two decimal places.) Activity A B D E b. Calculate the variance, o, for each activity. (Enter your responses rounded to two decimal places.) Activity A Activity A B Most likely (days) 9 14 6 8 5 Expected Time (days) 9.50 14.33 7 9.33 4.83 Variance Pessimistic (days) 19 19 15 21 8