please answer correctly, thank you so much

Challenge Harold and Rogel are incharged of planning and coordinating next mid-year's management training program for their company. They listed the following activity information for this project. Description Immediate Time in weeks Obtain speakers List meeting locations Select locations Take reservations Handle last minute details a) Draw a project network. b) Prepare the activity schedule. c) Draw a Gantt chart. d) What are the critical activities and what is the expected project completion time. e) If Harold and Rogel want a 0.99 probability of competing the project on time, how far ahead of the scheduled meeting date should they begin working on the project