Question

2. Given the table below (10 pts): A. Draw the project network B. Calculate the expected time to complete each activity as well as the variance (or standard deviation) associated with that time C. Determine the time associated with each potential path and denote the critical path D. Given the calculated data, what is the probability of completing the project in 30 days? 35 days? E. If you were to try to improve your performance (in terms of time), what step(s) would you focus on first? Most Step Description Predecessors Optimistic Likely Pessimistic A Contract Signing - 11 Questionnaire Design A 8 C Target Market IDE A D Survey Sample E Develop Presentation 12 Analyze Results Demographic Analysis Presentation to Client B 5 R 9 B

Answer 1

Activity	To	Tm	Tp	Te	(Var)^0.5	Var
A	3	4	11	5	1.333333	1.777778
B	2	5	8	5	1	1
C	3	6	9	6	1	1
D	8	12	20	12.66667	2	4
E	3	5	12	5.833333	1.5	2.25
F	2	4	7	4.166667	0.833333	0.694444
G	6	9	14	9.333333	1.333333	1.777778
H	1	2	4	2.166667	0.5	0.25

2:Ь ЧТЬ

The possible paths are

ABEH with duration 17.99

ABDFH with duration 28.98

ACDFH with duration 29.98

ACGH with duration 22.49

The critical path is ACDFH with duration 29.98.

Variance of the CP =7,7221

SD of the CP = (7721)^0.5 =2.778

Probability that the project will be completed within 30 days

z = 30-29.98 /2.778 =0.0071

which gives a probability of 50%

Prob. of completing in 35 days

z = 35-29.98 /2.778 =1.807

which gives a probability of 0.9645

Note : As per Chegg policies I can answer the first four questions only. Inconvenience is regretted.