I would like to have the answer of this exercise please

Problem 9 The following represents a project that should be scheduled using CPM: Time estimate (days) Activity Activity predecessor a m b A 5 6 10 B 5 6 8 C B 4 5 7 D A 3 6 10 E D, F 2 5 9 F C, B 3 5 8 G E 4 6 7 H G, F 3 6 9 a. Draw the network and show the ES, EF, LS and LF. b. What is the critical path? c. What is the expected project completion time? d. What is the probability of completing this project i) within 35 days and ii) between 30 and 40 days? e. If the probability of completion of the project is given as 0.92, within how many days will you complete the project?