Solve this multiple-choice question and choose the correct option.

PERT time estimation: sources for probabilistic activity time In PERT, the expected activity time is computed from three time estimates. Identify the inputs used to determine the probabilistic completion time for an activity.

Difficulty: Medium

Correct Answer: All of these (optimistic, most likely, pessimistic)

Explanation:

Given dataPERT uses three estimates: optimistic (t_o), most likely (t_m), and pessimistic (t_p).

ApproachExpected time (t_e) is computed as a weighted average:t_e = (t_o + 4 t_m + t_p) / 6

ConclusionTherefore, all three inputs are required.

Final AnswerAll of these (optimistic, most likely, pessimistic).

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