IST 420 - Project Management for IS Individual Exercise #7 - Chapter Seven Content 1. The following project is at the end of its sixth week. Use the information about the project in the following table to answer the questions. Activity Predecessors Duration (weeks) Budget Actual Cost % Completed A None 2 $300 $400 100 B None 3 200 180 100 A 2 250 300 100 D A 5 600 400 20 E B, C 4 400 200 20 a) Find the cost and schedule variances. b) Calculate the CPI and SPI. c) What is the critical ratio? d) Calculate the ETC and EAC