Problem 17-11 (Static) The following precedence diagram reflects three time estimates for each activity. Determine: Use Table B1 and Table B2. 9-10-12 3 8 5-7-10 8-10-14 11-12-13 6 11 14-18-26 8-8-8 5-6-7 6-6-6 1 2 4 13-13-13 10.5-13-15.5 10 7 10-12-14 10-11-12 7-10-12 5 9 a. The expected completion time for each path and its variance. (Round intermediate calculations to 4 decimal places and final answers to 2 decimal places.) Path Mean Var. Std. Dev. 1-2-3-8-11 1-2-4-6-11 1-2-4-7-11 1-2-5-9-10-11 b. The probability that the project will require more than 49 weeks. (Round intermediate calculations and final answer to 4 decimal places.) P(T 2 49 week) c. The probability that the project can be completed in 46 weeks or less. (Round intermediate calculations and final answer to 4 decimal places.) P(T 46 week)