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SD=(b-a)/6 SD=b-a/6 SD=(a-b)/6 SD=(b-a)/12 Note: The definitions of a=most optimistic time and b=most pessimistic time. Use the following information for questions 10 and 11 for the following is duration data related to an activity in a time scale network. Optimistic time=a=10 days Pessimistic time=b=20 days Most likely time=m=12 days
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(a+3m+b)/6 (a+4m+b))/6 (a+5m+b)/6 (a+m+b)/3 Note: A major assumption for all network methods is that activity durations are statistically dependent and where a=most optimistic time, b=most pessimistic time, m=most likely time.
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