Please use the table to answer questions, SHOW WORK Consider the following work breakdown structure for questions 46-50: Duration (Days) Most Start Finish Activity Node Node Optimistic Likely Pessimi…
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Question “Please use the table to answer questions, SHOW WORK Consider the following work breakdown structure for questions 46-50: Duration (Days) Most Start Finish Activity Node Node Optimistic Likely Pessimi…”
Please use the table to answer questions, SHOW WORK
Consider the following work breakdown structure for questions 46-50: Duration (Days) Most Start Finish Activity Node Node Optimistic Likely Pessimistic 50 31 70 41 35 59 34 82 41 58 32 30 5 46
What is the estimated expected (mean) time tor activity D? A 32 days B. 41 days C 44 days D. 42 days E 40 dayts 46 What is the estimated standard deviation for the critical path? A 6 days B. 5 days C. 49 days D. 3 days E. 2 days 47 48 What is the estimated expected (mean) time for project completion? A 70 days B 100 days C 106 days D 120 days E. 226 days What is the estimated slack time for activity D? A 0 days B. 10days C. 14 days D. 20 days E. 80 days 49 What is the probability that this project will be completed within 130 days? A 08413 В 09 C 09544 D 0.9772 50
Answer
Expected mean time = (Optimistic + pessimistic + 4*most likely)/6
Variance = ((Pessimistic – Optimistic)/6)^2
46.
The correct answer is E.40 Days
47.
Path available: A-C Duration => 120 Days
B-D-E duration => 106 days
Critical path is A–C
Variance of the critical path = 9+16 =25 days
Standard deviation of Critical Path A-C is sqrt(25), = 5 Days
The correct answer is “B.” 5 days
48.
Project completion time = Critical path A-C duration = 120 days
Correct answer: D. 120 Days
49.
The earliest start time for B = 0 days
The Earliest End Time of B = The Earliest Start Time of B + Duration Of B = 0+30 = 30 Days
The earliest start time for D = the earliest finish time for B = 30 days
The Earliest End Time of D = The Earliest Start Time of D + Duration Of D = 30+40 =70 days
Late Finish of E = 120 Days
Late Start of E = Late End of E – Duration E = 120 – 36 = 84 Days
Late Finish of D = Late Beginn of E = 84 Days
Slack of D = Late finish – Early finish = 84 – 70 = 14 days
Correct answer is C. 14 Days
50.
When x = 130
z = (130 – 120)/5 = 2
Probability that project will be completed within 130 days = P(Z2) = 0.9772
Correct answer is D) 0.9772
Conclusion
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