a construction task has been estimated to take an average of 25 days with a standard deveation of 4 days. What duration should be used if there is a 90% confidence that the duration will not be exceeded? What is the probability that the duration will actually exceed 3 days? Please show formulas used and indicate answers

a construction task has been estimated to take an average of 25 days with a standard deveation of 4 days. What duration should be used if there is a 90% confidence that the duration will not be exceeded? What is the probability that the duration will actually exceed 3 days? Please show formulas used and indicate answers

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter13: Evaluating Transportation Alternatives

Section: Chapter Questions

Problem 2P

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