MBA 624Name: Yonatan Balin, assignment help

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MBA
624Name: Yonatan Balin

Skill
Builder  #2

1. 
General Foundry, Inc., a metal works plant in
Milwaukee, has long been trying to avoid the expense of installing air
pollution control equipment. The local environment protection group has
recently given the foundry 16 weeks to install a complex air filter system on
its main smokestack. General Foundry has been warned that it may be forced to
close unless the device installed in the allotted period. Lester Harky, the
managing partner, wants to make sure that installation of the filtering system
progressed smoothly and on time.

General Foundry has identified the following eight
activities that need to be performed and their sequential relationship.

Activity

Description

Time

(weeks)

Immediate

Predecessors

A

Build internal components

2

B

Modify roof and floor

4

C

Construct collection stack

2

A

D

Pour concrete and install frame

4

A, B

E

Build high-temperature burner

4

C

F

Install pollution control system

3

C

G

Install air pollution device

5

D, E

H

Inspect and test

2

F, G

  1. Construct
    the appropriate network diagram. (10 points)
  1. Which jobs can be delayed without delaying the project
    completion time? (10 points)
  1. Can
    General Foundry complete the project on time? Why or why not? (20 points)
  1. Suppose
    Lester wants to shorten the completion time and his options are:

(1)Reduce activity D by one week, which costs $700/week;

(2)Reduce activity E by one week, which costs $800/week;

(3)Reduce activity G by one week, which costs $1000/week;

If General Foundry will save $2000 for each week that the
earliest completion time is reduced, which single option, if any, should Lester
choose? (10 points)

2. 
The following table
represents a plan for a project:

Time Estimates (days)

Job No.

Predecessor Job(s)

Optimistic

Most likely

Pessimistic

A

1

2

3

B

2

3

4

C

A

4

5

6

D

B

8

9

10

E

C, D

2

5

8

F

D

4

5

6

G

E

1

2

3

  1. Construct
    the appropriate network diagram. (10 points)
  1. What
    is the critical path? (10 points)
  1. What
    is the expected completion time for the project and what is the variance
    of project completion time? (20 points)
  1. Is
    the probability that the project will take less than 18 days to complete
    larger than 50% or smaller than 50%? (10 points)

skill_builder_2_s16.doc

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