A project for improving a billing process has the following precedence relationships and activity times: Immediate Predecessor(s) Activity A B Activity Time (weeks) 2 9 6 D 14 E F B, C B D E F G 4 6 6 H b. Calculate the slack for each activity. Which activities are on the critical path? Activity Activity Time (weeks) 2 On critical path? Slack (weeks) B 9 6 D 14 E 11 F 4 6 H 4 6 Enter your answer in the edit fields and then click Check