Because the measurement for Step 3 involves two separate sets of values, it is defined as a custom distribution.
To explore this:
Choose Define, then Define Assumption to display the Define Assumption dialog for that assumption.
Figure 162, Custom Assumption for Step 3, Document Verification shows the expanded Define Assumption dialog for Step 3, Document Verification. The dialog has been expanded by clicking the More button.
This dialog reflects the information from Measure Phase that 80% of the time, cycle time for this step ranges from two to four days (16 to 32 hours) but 20% of the time, cycle time ranges from four to six days (32 to 48 hours).
