Using above network diagram answer this question

NETWORK DIAGRAM NOR - peon Identify HEDICAL RESEARCH CENTRE hospitals + Grace collect photos Identify plan & schedule hospital 'Visiti 3. Grace Pepote doce patient for testimonial 2 Groce Design Ques bonnaire Lonchos 15 Levi collect tesoro -als Por collect Graphe tables & chasti 8 baking Reviews drast Finalise Colect Somatos coloce es arcos sono compo for design 11 Alena 9 Ales 10 NOU Proting 12 hori Distribute Raview approve final design 13 Abad folbo up the Yepos 114 Grace the distribution 15 Noi CASE STUDY 1 A Not-for-Profit Medical Research Center This case study is a continuation of the case study started in Chapter 4 CASE QUESTIONS 1. Develop an estimated duration for each activity 2. Using a project start time of (or May 15) and a required project completion time of 180 days (or November 15), calculate the ES, EF, LS, and LF times and TS for each activity. If your calculations result in a project schedule with negative TS, revise the project scope, activity estimated durations, and/or sequence or dependent relationships among activities to arrive at an acceptable baseline schedule for completing the project within 180 days (or by November 15) Describe the revisions you made 3. Determine the critical path and identify the activities that make up the critical path. 4. Produce a bar chart (Gantt chart) based on the ES and EF times from the schedule in item 2 Note: This case study will continue in Chapters through 8, so save the results of your work