The following estimates of activity times (in days) are available for a small project.

Activity	Optimistic	Most Probable	Pessimistic
A	5	6.0	7
B	8	9.0	10
C	7	7.5	11.5
D	7	9.0	10
E	6	7.0	9
F	6	7.0	8

(a)Compute the expected activity completion times and the variance for each activity. (Round your answers to two decimal places.)

Activity	Expected Times	Variance
A
B
C
D
E
F

(b)An analyst determined that the critical path consists of activities B-D-F. Compute the expected project completion time and the variance of this path. (Round your answers to two decimal places.)expected project completion time variance of projection completion time