Doug Casey is in charge of planning and coordinating next spring- sales management training program for his company. Doug listed the following activity information for this project. Activity Immediate Predecessor Optimistic Most probable Pesimistic A Plan topic - 1.5 2.0 2.5 B Obtain speakers A 2.0 2.5 6.0 C List meeting location - 1.0 2.0 3.0 D Select location C 1.5 2.0 2.5 E Finalize speaker travel plan B,D 0.5 1.0 1.5 F Make final check with speakers E 1.0 2.0 3.0 G Prepare and mail brochure B,D 3.0 3.5 7.0 H Take reservations G 3.0 4.0 5.0 I Handle last minute details F,H 1.5 2.0 2.5 a. Draw a project network b. Prepare an activity schedule. c. What is the critical activities and what is the expected project completion time? d.If Doug wants a 0.99 probability of completing the project on time, how far ahead of the scheduled meeting date should he begin working on the project?