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Jean Walker is making plans for spring break at the beaches in Florida. In applying techniques she learned in her quantitative methods class, she has...
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would someone answer these questions? in word and excel? 

7-1 Jean Walker is making plans for spring break at the beaches in Florida. In applying techniques she learned in her quantitative methods class, she has identified the activities that are necessary to prepare for her trip. The following table lists the activities and the immediate predecessors. Draw the network for this project. Activity Immediate Predecessors A B A C A D B E C,D F A G E,F The following are the activity times for Jean Walkers activities. Find the earliest, latest, and slack times for each activity. Then find the critical path. Activity Time (in days) A 3 B 7 C 6 D 2 E 5 F 8 G 4 7-2 Tom Schriber, a director of personnel of Management Resources, Inc., is in the process of designing a program that its customers can use in the job-finding process. Some of the activities include preparing resumés, writing letters, making appointments to see prospective employers, researching companies and industries, and so on. Some of the information on the activities is shown in the following table: Days Activity a m b Immediate Predecessors A 8 10 12 B 8 10 14 C 3 3 4 D 9 20 34 A E 6 8 11 C F 9 10 14 B,D,E G 7 10 14 B,D,E H 14 15 18 F I 10 11 13 F Page  1  of  3 WorkfileContents.docx
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J 6 8 11 G,H K 4 7 8 I,J L 2 4 8 G,H a. Construct a network for this problem. b. Determine the expected time and variance for each activity. c. Determine ES, EF, LS, LF, and slack for each activity. d. Determine the critical path and project completion time. e. Determine the probability that the project will be finished in 70 days or less. f. Determine the probability that the project will be finished in 80 days or less. g. Determine the probability that the project will be finished in 90 days or less. 7-3 The air pollution project discussed in the chapter has progressed over the past several weeks, and it is now the end of week 8. Lester Harky would like to know the value of the work completed, the amount of any cost overruns or underruns for the project, and the extent to which the project is ahead of or behind schedule by developing a table like Table 11.8. The revised cost figures are shown in the following table: Activity Percent of Completion Actual Cost ($) A 100 20,000 B 100 36,000 C 100 26,000 D 100 44,000 E 50 25,000 F 60 15,000 G 10 5,000 H 10 1,000 7-4 The Scott Corey accounting firm is installing a new computer system. Several things must be done to make sure the system works properly before all the accounts are put into the new system. The following table provides information about this project. How long will it take to install the system? What is the critical path? Activity Immediate Predecessor(s) Time (weeks) A 3 B 4 C A 6 D B 3 E A 5 F C 2 G D,E 5 H F,G 5 Page  2  of  3 WorkfileContents.docx
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