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You have just used the network planning model for a county road resurfacing project and found...

You have just used the network planning model for a county road resurfacing project and found the critical path length is 40 days and the standard deviation of the critical path is 10 days. Suppose you want to pick a time (in days) within which you will complete the project with 90% confidence level, what should be that time (in days and round to the nearest whole number.)

Multiple Choice

  • 40

  • 13

  • 45

  • 29

  • 53

business   Operations-Management   
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Answer #1

FORMULA:
DUE DATE = EXPECTED COMPLETION TIME + (Z * STDEV)

Expected time = 40
CONFIDENCE INTERVAL = 90 = Z VALUE OF 1.282
STANDARD DEVIATION = 10

DUE DATE = 40 + (1.282 * 10) = 53

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