Bay Community Hospital has decided to introduce a new diagnostic procedure in the clinic. This procedure required the acquisition, installation, and introduction of a new medical instrument. Dr. Ed Windsor was assigned the responsibility for assuring that the introduction is performed as quickly and as smoothly as possible.

Dr. Windsor created a list of activities that would have to be completed before the new service could begin. The activities are listed in the table below.

Activity	Description	Duration (weeks)	Immediate Predecessors
A	Write instructions	2	---
B	select operators	5	---
C	train operators	4	A, B
D	announce a new service	5	B
E	purchase, ship, and receive the equipment	6	---
F	test new operators on equipment	2	C, E

a) Using the Critical Path Method, find earliest start time, earliest finish time, latest start time, and latest finish time for each of the activities. What is the earliest completion time for this project? Identify critical activities and paths. What is the maximum delay time for each activity such that it will not increase the project completion time?

b) After examining his initial list of activities, Dr. Windsor realizes that while preliminary parts of the operator’s training can take place before the new equipment arrives, the last three weeks of training must take place only after the equipment arrives. Re-do the project plan, completion time estimate, and critical activity identification using CPM and taking this new information into account.

c) Now suppose activities A and B both have to be done using the same resources. This just means that activities A and B cannot be completed at the same time anymore and should be completed sequentially. Re-do the project plan, completion time estimate, and critical activity identification using CPM and taking this new information into account.