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Quest Task time estimates for the modification of an assembly line at Jim Goodale's Carbondale, Illinois, factory are as follows: @ Immediate Predecessor(s) A Activity A B D Time (in hours) 6.0 7.0 5.0 6.0 4.5 8.0 4.0 C E F A B, C B, C D E, F D G E- This exercise contains only parts d, b, and c. F d) Using the line drawing tool five times, draw a Gantt chart for activities C through G of the project based on the early times. G Carefully follow the instructions above, and only draw the required objects. 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 Dave Fletcher was able to determine the activity times for constructing his laser scanning machine. Fletcher would like to determine ES, EF, LS, LF, and slack for each activity. The total project completion time and th critical path should also be determined. Here are the activity times: Activity Time (weeks) Immediate Predecessor(s) Activity Time (weeks) Immediate Predecessor(s) A 5 E 5 B B 6 F 6 2 A G 10 CE D 3 A H 7 DF Dave's earliest start (ES) and earliest finish (EF) are: ES EF Activity 5 Kelle Carpet and Trim installs carpet in commercial offices. Peter Kelle has been very concerned with the amount of time it took to complete several recent jobs. Some of his workers are very unreliable. A list of activities and their optimistic completion time, the most likely completion time, and the pessimistic completion time (all in days) for a new contract are given in the following table: Time (days) m b Immediate Predecessor(s) Time (days) m a b a 1 4 Activity B 6 8 3 2 2. 6 11 9 Immediate Predecessor(s) A, E F G H1 Activity G H 1 J K 4 12 1 D 3 10 14 2 4 3 8 6 14 2 7 4 10 16 8 20 10 6 2 6 E F BD A, E This exercise contains only parts b, c, and d. b) Activities on the critical path for the project are Ross Hopkins, president of Hopkins Hospitality, has developed the tasks, durations, and predecessor relationships in the following table for building new motels. Immediate Predecessor(s) Immediate Predecessor(s) Activity G Activity B CE Time (weeks) a m b 4 9 10 2 8 24 9 14 18 4 6 9 1 2 4 6 8 20 A U I - DV Time (weeks) a m 2 3 1 1 7 7 6 7 1 1 b 4 1 7 12 4 F F D, G, H I, J D E B C, E F a) The expected (estimated) time for activity C is weeks. (Round your response to two decimal places.) The estimated times and immediate predecessors for the activities in a project at Howard Umrah's retinal scanning company are given in the following table. Assume that the activity times are independent. Time (weeks) m b a Activity A Time (weeks) a m b 9 10 11 4 10 16 Immediate Predecessor(s) Activity D Immediate Predecessor(s) B 11 9 5 10 8 11 B This exercise contains only parts a, b, c, d, and e. a) Based on the activity time estimates, the expected times and variance for each of the activities are (round your response to two decimal places): Expected Time Activity Variance A Janice Eliasson must complete the activities in the following table to finish her consulting project: Activity Expected Time 7 3 9 4