Blue Lagoon is a contractor that installs residential swimming pools, projects that consist of nine major activities. The activities, their immediate predecessors, and the activity time estimates (in days) are shown.ActivityImmediate PredecessorOptimisticMost ProbablePessimisticA 356B 246CA, B456DA, B689EB246FC123GD4911HD, F7911IE, G, H345 (a)What are the critical activities? (Enter your answers as a comma-separated list.) (b)What is the expected time (in days) to complete the project? (Round your answer to two decimal places.) days (c)Based only on the critical path, what is the estimated probability that the project can be completed in 25 or fewer days? (Round your answer to four decimal places.)

Answered: Blue Lagoon is a contractor that…

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter2: Introduction To Spreadsheet Modeling

Section: Chapter Questions

Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...

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Blue Lagoon is a contractor that installs residential swimming pools, projects that consist of nine major activities. The activities, their immediate predecessors, and the activity time estimates (in days) are shown.

Activity	Immediate Predecessor	Optimistic	Most Probable	Pessimistic
A		3	5	6
B		2	4	6
C	A, B	4	5	6
D	A, B	6	8	9
E	B	2	4	6
F	C	1	2	3
G	D	4	9	11
H	D, F	7	9	11
I	E, G, H	3	4	5

(a)

What are the critical activities? (Enter your answers as a comma-separated list.)

(b)

What is the expected time (in days) to complete the project? (Round your answer to two decimal places.)

days

(c)

Based only on the critical path, what is the estimated probability that the project can be completed in 25 or fewer days? (Round your answer to four decimal places.)

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