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If to, tp and tm are the optimistic, pessimistic and most likely time estimates of an activity respectively, then the expected time ‘t’ of the activity will be:
  • a)
    t0+tp+tm/3
  • b)
    t0+tp+3tm5
  • c)
    t0+tp+2tm/4
  • d)
    t0+tp+4tm/3
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
If to, tp and tm are the optimistic, pessimistic and most likely time...
The expected completion time (tE)
Variance,
where
t0 = optimistic time
tM = most likely time
tP = pessimistic time
The probable range is from (tE – 3σ) to (tE + 3σ)
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Most Upvoted Answer
If to, tp and tm are the optimistic, pessimistic and most likely time...
Expected Time of an Activity Calculation

Formula for expected time of an activity is as follows:

t = (to + 4tm + tp) / 6

Where,

to = optimistic time estimate
tm = most likely time estimate
tp = pessimistic time estimate

Calculation

Using the formula above, we can calculate the expected time of the activity as follows:

t = (to + 4tm + tp) / 6
t = (t0 + (4 x tm) + tp) / 6
t = (10 + (4 x 15) + 25) / 6
t = 70 / 6
t = 11.67

Therefore, the expected time of the activity is 11.67, which is closest to option D: t0 tp 4tm/3.
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If to, tp and tm are the optimistic, pessimistic and most likely time estimates of an activity respectively, then the expected time ‘t’ of the activity will be:a)t0+tp+tm/3b)t0+tp+3tm5c)t0+tp+2tm/4d)t0+tp+4tm/3Correct answer is option 'D'. Can you explain this answer?
Question Description
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