a. Draw the CPM network for this problem. b. Create a spreadsheet to calculate and summarize the earliest and latest start and finish times, the slack for each activity, and the critical activities. c. What is the earliest time the audit can be completed? d. Use Microsoft Project to verify the critical path for this project. 21. Refer to the previous question. Suppose that each of the audit activities can be crashed by the amounts indicated in the following table. Activity Crash Days Cost Per Day $2,000 3,000 800 1,200 1,000 1,500 NANG NONNANAN 0 H 1,500 1,300 2,000 2,500 1,200 a. What is the earliest the audit could be completed, and what is the incremental cost associated with this schedule? b. How much incremental cost would be incurred if the client insisted that the audit be completed within 55 days? C. Suppose the client wants the project completed within 55 days. Further suppose that it might be possible to crash activity G by one day. How much, if any, should the accounting firm be willing to pay to crash activity G by one day? Explain. 22. A partner in the national accounting firm mentioned in the previous questions does not believe the time estimates for each activity can be specified with certainty. In- stead, she prefers to specify a minimum, most likely, and maximum time estimate for each task. These estimates are given in the following table. Predecessor Activity Activities Min Most Likely Max 9 12 15 12 16 18 11 13 15 10 14 20 7 9 15