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MM305 UNIT 9 PROJECT

MM305 UNIT 9 PROJECT

Name:

 

Directions:

  • In this project you will be using the States Data file that is found in Doc Sharing under the Instructor-Graded Projects:
  • Steps for accessing the States Data file:
  1. Open your Excel with PhStat2
  2. Click File—Open
  3. Select the States Data file
  • Not all questions require the use of technology or the States Date file.
  • You may insert your answers, including any charts, graphs, or output, on this document.
  • Be sure to put your name on this document and save it to your computer.

 

1. Allen Machines specializes in developing weed-harvesting equipment that is used to clear small lakes of weeds.  Allen Machines is contemplating the construction of a machine that would harvest weeds on narrow rivers and waterways.  The activities and time in weeks necessary to build one of these experimental machines are shown in the table below.

 

Activity

Immediate Predecessors

Time in Weeks

A

none

6

B

none

5

C

A

3

D

A

2

E

B

4

F

B

6

G

C,E

10

H

D,F

7

 

1.    What is the minimum possible time required for completing the project?

2.    What is the latest possible time that Activity D may be started without delaying the completion of the project?

3.    What is the latest finish time for Activity F?

4.    What is/are the critical path(s)?

 

 

2. The following is the activity and associated costs for the renovation of the local high school football stadium. The times are in weeks.

 

Activity

Immediate Predecessor

Time

Cost ($)

A

4

25,000

B

5

30,000

C

A

3

15,000

D

B

8

50,000

E

B

2

12,000

F

C, D

3

15,000

G

C, D

7

46,000

H

E, F

2

20,000

 

1.    What is the critical path for this project?

2.    How much of the total budget would be spent in Week 8 (Period 8) with the earliest start budget?

 

3. Precision Manufacturing has a government contract to produce stainless steel rods for use in military aircraft.  Each rod is required to be 20 millimeters in diameter. Each hour, random samples of size n = 4 rods are measured to check process control. Five hours of observations yielded the following:

 

Diameter

Time

Rod 1

Rod 2

Rod 3

Rod 4

9 A.M.

19.8

20.4

19.9

20.3

10 A.M.

20.1

20.2

19.9

19.8

11 A.M.

19.9

20.5

20.3

20.1

Noon

19.7

19.8

20.3

20.2

1 P.M.

19.7

20.1

19.9

19.9

 

1.    Construct the xbar-chart and the R-chart.

2.    Is the process in control?

 

4. Modern Electronics specializes in manufacturing modern electronic components.  It also builds the equipment that produces the components.  Modern Electronics is considering building a new facility but the estimated profits would be impacted by the type of market that develops.  The probability for a strong market is 0.3; for a fair market is 0.5; and for a poor market is 0.2. You are responsible for advising the president of Modern Electronics on the type facility that should be built or to not build a facility at all.  The table shows the estimated profits under each market and for each size facility.

 

Estimated Profits

 

Strong Market

Fair Market

Poor Market

Build a large facility

550,000

110,000

-310,000

Build a medium-size facility

300,000

129,000

-100,000

Build a small facility

200,000

100,000

-32,000

Do not build a facility

0

0

0

 

1.    Provide a recommendation to the president that maximizes profits

2.    Provide a second recommendation to the president that minimizes regret.

 

 

5. Consulting income at Kaplan Associates for the period February – July is shown in the table below. Assume that the initial forecast for February is $65,000. Use Exponential smoothing to forecast August’s income.

Month

Income ($1,000)

February

70.0

March

68.5

April

64.8

May

71.7

June

71.3

July

72.8

 

1.    Use a smoothing constant of α = 0.2.

2.    Use a smoothing constant of α = 0.5.

3.    Which forecasting constant is best in this situation?

 

6. Johnson Construction Company is in the process of installing power lines to a large housing development. The company wants to minimize the total length of wire used, which would minimize the company’s cost. The housing development is shown below.  Each house has been numbered, and the distances between houses are given in hundreds of feet.

 

 

1.    What do you recommend to Johnson Construction Company?

 

 

 

 

7. The storm drains in the Cedar Rapids, Iowa, have been upgraded following the devastating floods of 2008. The network of storm drains and the capacities are shown below. Determine the maximum flow (in hundreds of gallons of water per minute) from node 1 to node 5. Remember that the arc has both capacity and reverse capacity.

 

From Node

To Node

Fluid Flow

1

2

250

2

1

100

1

3

100

3

1

150

1

4

400

4

1

400

1

5

150

5

1

200

2

4

300

4

2

200

3

4

250

4

3

300

3

5

300

5

3

250

4

5

300

5

4

0

 

 

8. From the States Data Set the following output for the Income in 2000 and for the Income in 2010 was created.

 

 

 

1.    Which variable has the greatest relative variation?

 

9. You are a consultant working for Kaplan Consulting. The U.S. Department of Labor has requested assistance in evaluating the impact of economic stimulus on the unemployment rate. From the States Data Set the following t test was conducted to answer the question:

“Has there been a significant reduction in the national unemployment rate between January and June?”

 

 

1.    What is the Null and the Alternative Hypotheses?

2.    What is your level of alpha (α)?

3.    What is your conclusion?

4.    What is your answer to the question?

 

 

 

10. The Governor of a southern state has asked Kaplan Consulting to determine if the state were able to increase the percentage of its population with a Bachelor’s Degree to 50%, what might be the expected median household income based on 2010 data? Here is the output from the Regression procedure from Excel.

 

 

 

1.    What would be the predicted median household income if the percentage of the population in the state were 50% or 50?

 

Submitting Your Project

 

  • Save your project in a location that you will remember and with your full name. When you are ready to submit your project, click on the Dropbox and complete the steps below:
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  • In the “Comments” field include your name.
  • Click the “Add Attachments” button.
  • Follow the steps listed to attach your Word Document.
  • You should revisit the Dropbox to view any helpful feedback your instructor has and to retrieve your graded project.
  • Make sure that you save a copy of your submitted project.

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