The project described in the following table has just begun. It is scheduled to be completed in 11 weeks. Use Table B1 and Table B2.   Activity Estimated Time (weeks) Standard Deviation (wks.) 1-2 4 0.70 2-4 6 0.90 1-3 3 0.62 3-4 9 1.90     a. If you were the manager of this project, would you be concerned? (Round your intermediate calculations to 2 decimal places and "Probability" values to 4 decimal places.)             because the probability of finishing on schedule is only about .   b. If there is a penalty of $5,000 a week for each week the project is late, what is the probability of incurring a penalty of at least $5,000? (Round your intermediate calculations to 2 decimal places and "Probability" values to 4 decimal places.)

Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter2: Introduction To Spreadsheet Modeling
Section: Chapter Questions
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The project described in the following table has just begun. It is scheduled to be completed in 11 weeks.
Use Table B1 and Table B2.
 

Activity Estimated Time
(weeks)
Standard Deviation
(wks.)
1-2 4 0.70
2-4 6 0.90
1-3 3 0.62
3-4 9 1.90
 

 
a. If you were the manager of this project, would you be concerned? (Round your intermediate calculations to 2 decimal places and "Probability" values to 4 decimal places.)
 

          because the probability of finishing on schedule is only about .
 
b. If there is a penalty of $5,000 a week for each week the project is late, what is the probability of incurring a penalty of at least $5,000? (Round your intermediate calculations to 2 decimal places and "Probability" values to 4 decimal places.)
 

Probability           

Have worked this with various formulas and all come back wrong.  Where am I making a mistake

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ISBN:
9781337406659
Author:
WINSTON, Wayne L.
Publisher:
Cengage,