MGT 455 WEEK 2 Discussion

MGT 455 WEEK 2 Discussion
Problem set 2

3.7 Task time estimates for the modification of an assembly
line at Jim Goodale- Carbondale, Illinois, factory are as follows:

ACTIVITY			TIME 			IMMEDIATE
(IN HOURS)		 PREDECESSORS

A				6.0				-
B				7.2				-
C				5.0				A
D				6.0				B, C
E				4.5				B, C
F				7.7				D
G				4.0				E, F

a) Draw the project network using AON.
b) Identify the critical path.
c) What is the expected project length?




3.15 The following is a table of activities associated with
a project at RafayIshfaq- software firm in Chicago, their durations,
and what activities each must precede:

ACTIVITY			DURATION (WEEKS)			PRECEDES
A (start) 				1					 B, C
B 					1 					E
C 					4 					F
E	`			 2 					F
F (end) 				2					 —

a) Draw an AON diagram of the project, including activity durations.
b) Define the critical path, listing all critical activities in chronological
order.
c) What is the project duration (in weeks)?
d) What is the slack (in weeks) associated with any and all noncritical
paths through the project?


3.17 Bill Fennema, president of Fennema Hospitality, has
developed the tasks, durations, and predecessor relationships in
the following table for building new motels. Draw the AON network
and answer the questions that follow.

ACTIVITY	IMMEDIATE 		TIME ESTIMATES (IN WEEKS)
		PREDECESSOR(S)     OPTIMISTIC    MOST LIKLEY     PESSIMISTIC

A		      -				4		8			10
B		      A				2		8			24
C		      A				8		12			16
D		      A				4		6			10
E                      B				1		2			3
F                      E, C			6		8			20
G                      E, C			2		3			4
H                     F				2		2			2
I                      F				6		6			6
J                     D, G, H			4		6			12
K                     I, J			2		2			3

c) Based on the calculation of estimated times, what is the critical
path?
d) What is the estimated time of the critical path?
e) What is the activity variance along the critical path?
f) What is the probability of completion of the project before
week 36? PX