The estimated times and immediate predecessors for the activities in a project at Howard Umrah's retinal scanning company are given in the following table. Assume that the activity times are independent. Time (weeks) Immediate Predecessor(s) Time (weeks) Immediate Activity Activity C a m a m Predecessor(s) A 8 10 11 8 10 13 A B 4 10 16 D 8 12 B This exercise contains only parts a, b, c, d, and e. a) Based on the activity time estimates, the expected times and variance for each of the activities are (round your response to two decimal places): Еxpected Time Activity Variance A B D b) The expected completion time of the critical path = weeks (round your n aces). The expected completion time of the path other than the critical path = we to two decimal places). c) The variance of the critical path = weeks (round your response to two decimal places). The variance of the path other than the critical path=- weeks (round your response to two decimal places). d) If the time to complete the activities on the critical path is normally distributed, then the probability that the critical path will be finished in 22 weeks or less = (enter as a probability and round your response to two decimal places). e) If the time to complete the activities on the non critical path is normally distributed, then the probability that the non critical path will be finished in 22 weeks or less = (enter as a probability and round your response to two decimal places)

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L 08ALibr
The estimated times and immediate predecessors for the activities in a proiect at Howard Umrah's retinal scanning company are give
The estimated times and immediate predecessors for the activities in a project at Howard Umrah's retinal scanning company are given in the following table. Assume that the activity times are independent.
Time (weeks)
Immediate
Time (weeks)
Immediate
Activity
Predecessor(s) | Activity
Predecessor(s)
a
m
a
m
A
8
10
11
8
10
13
A
в
4
10
16
D
12
в
This exercise contains only parts a, b, c, d, and e.
a) Based on the activity time estimates, the expected times and variance for each of the activities are (round your response to two decimal places):
Expected
Time
Activity
Variance
A
B
b) The expected completion time of the critical path =
weeks (round your n
aces).
The expected completion time of the path other than the critical path = |
wei
to two decimal places).
c) The variance of the critical path = weeks (round your response to two decimal places).
The variance of the path other than the critical path =
weeks (round your response to two decimal places).
d) If the time to complete the activities on the critical path is normally distributed, then the probability that the critical path will be finished in 22 weeks or less = |
|(enter as a probability and round your response to two decimal places).
e) If the time to complete the activities on the non critical path is normally distributed, then the probability that the non critical path will be finished in 22 weeks or less = (enter as a probability and round your response to two decimal places).
%3D
Transcribed Image Text:Business / Onerations Managem. L 08ALibr The estimated times and immediate predecessors for the activities in a proiect at Howard Umrah's retinal scanning company are give The estimated times and immediate predecessors for the activities in a project at Howard Umrah's retinal scanning company are given in the following table. Assume that the activity times are independent. Time (weeks) Immediate Time (weeks) Immediate Activity Predecessor(s) | Activity Predecessor(s) a m a m A 8 10 11 8 10 13 A в 4 10 16 D 12 в This exercise contains only parts a, b, c, d, and e. a) Based on the activity time estimates, the expected times and variance for each of the activities are (round your response to two decimal places): Expected Time Activity Variance A B b) The expected completion time of the critical path = weeks (round your n aces). The expected completion time of the path other than the critical path = | wei to two decimal places). c) The variance of the critical path = weeks (round your response to two decimal places). The variance of the path other than the critical path = weeks (round your response to two decimal places). d) If the time to complete the activities on the critical path is normally distributed, then the probability that the critical path will be finished in 22 weeks or less = | |(enter as a probability and round your response to two decimal places). e) If the time to complete the activities on the non critical path is normally distributed, then the probability that the non critical path will be finished in 22 weeks or less = (enter as a probability and round your response to two decimal places). %3D
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