The expected value and variance of the time needed by activity B are, respectively Group of answer choices 3, 0.3600 5, 0.6944 5, 0.4444 6, 0.6944 none of the above

W AutoSave ( off H . U A abc =123 Exam 2 Scenarios - Protected View . Saved Search X File e Insert Draw Design Layout References Mailings Review View Help Comments LO Viewing ~ Share PROTECTED VIEW Be careful-files from the Internet can contain viruses. Unless you need to edit, it's safer to stay in Protected View. Enable Editing X Use the following scenario and data for questions 31 to 40 A project involving the replacement of the air conditioning system of an elementary school is divided into eight activities. The following table lists the three points time estimates for each activity. Immediate Time Estimates (weeks) Activity Predecessor(s) Optimistic (a) Most likely (m) Pessimistic (b) A 1.2 3.0 4.8 3.5 4.5 8.5 C A 3.0 5.0 7.0 D B, C 4.5 5.5 9.5 E 2.0 2.5 6.0 m 3.0 6.0 9.0 G B, C 2.0 4.0 12.0 F. G 2.0 5.0 8.0 In order to answer the following questions, you may use the following table to compute the expected value and the variance of the time needed by each activity Immediate Time Estimates (weeks) Expected Variance ( Activity Predecessor(s) Optimistic (a) Most likely (m) Pessimistic (b) Time ( / ) A 1.2 3.0 4.8 3.5 4.5 8.5 A 3.0 5.0 7.0 B. 4.5 5.5 9.5 Innmona O 2.0 2.5 6.0 m 3.0 6.0 9.0 B, 2.0 4.0 12.0 2.0 5.0 8.0 2 Also in order to answer the following questions vou mav use the following table to schedule the proiest so as to Page 2 of 3 881 words Text Predictions: On [ Focus 100% 5 52OF 1:50 AM Clear Q Search L E 10/31/2025