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 Immediate Time (weeks) Immediate (weeks) b Predecessor(s))Activity am bPredecessor(s) 13 18 If the time to complete the activities on the critical path is normally distributed, then the probability Activitya m A B 10 11 -C7 -D5 1012A 1012B that the critical path will be finished in 22 weeks or less =_ (enter as a probability and round your response to two decimal places). 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 =

Practical Management Science
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ISBN:9781337406659
Author:WINSTON, Wayne L.
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Chapter2: Introduction To Spreadsheet Modeling
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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 Immediate Time
Immediate
(weeks)
Activitya
A
B
(weeks)
b Predecessor(s)Activity
10
11
am b Predecessor(s)
-C7
-D5
m
7
13
1012A
1012B
5
18
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).
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 =_
Transcribed Image Text: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 Immediate Time Immediate (weeks) Activitya A B (weeks) b Predecessor(s)Activity 10 11 am b Predecessor(s) -C7 -D5 m 7 13 1012A 1012B 5 18 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). 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 =_
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