If a patient appointment project has an expected total duration of 25 days. Several optimistic employees feel that it can be completed in as little as 18 days, while others expect it to take nearly 40 days. Using the PERT calculation, what is the project duration to be used in project Gantt charts and other tracking tools? If a CPM calculation of project duration was 25 days, how does the PERT calculation compare and why?

how do I create a chart of each of the steps of the project and assign time expectations for each step of the project using a PERT calculation and a CPM calculation. An example of a chart header would be: