i would really appreciated if answer this question quickly thank you all

Activities of a project are provided below: Activity a Immediate predecessor Time (days) b | 8 10 4 5 11 1 0 4 14 BD 21 GF | E,H D G Activity Exp. Standard Duration Deviation Duration Variance ESEF LS > IIIIIIIIII - - - - e) (2 pts) Identify those activities comprising the critical path. f) (2 pts) What is the project's estimated (expected) duration? g) (2 pts) Find the probability that the project will be completed in 25 days or less. h) (2 pts) Find the probability that the project will be completed in 28 days or less. i) (2 pts) Provide a deadline of the project on which the project can be completed with 95% probability, j) (2 pts) Explain the effect on project duration; i. if only expected duration (Te) of activity B changes to 7 days? ii. if only expected duration (Te) of activity D changes to 7 days? iii. if only expected duration (Te) of activity G changes to 7 days