Reference no: EM133023058

Table 1: Activity Times and Predecessors Minutes Required Activity

Description Predecessor Activity Optimistic a Most Likely m Pessimistic b A B C D E F G Drain Oil Replace Filter Refill Oil Check Tyres Wash Windows Fill Fluids Final Test --- A B, E --- D E C, F 2 1 2 2 2 2 0.5 3.5 2 2.5 3 3 3 1 5 3 4 4 5 4 1.5 The variability in times required to perform each activity is due to the different types, sizes, and conditions of the cars to be serviced. Round off to two decimal places were fractional.

A. Draw the activity network diagram for this problem (either AON or AOA)

B. Determine the Expected Time and Variance for each activity.

C. Show the activity schedule (ES, EF, LS, and LF) as well as slack times.

D. Use the ES, EF, LS, and LF from your activity schedule or table to determine the critical path for the project.

E. What are the expected time and the variance of the project?

F. What is the probability the project will be finished within 10 minutes?