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1.
Select Help > Sample Data Library and open Reliability/Mixture Demo.jmp.
2.
Select Analyze > Reliability and Survival > Life Distribution.
3.
Select Y2 and click Y, Time to Event.
4.
5.
In the Compare Distributions report, select Weibull distribution and the corresponding Scale radio button.
A probability plot for a single Weibull distribution fit appears in Figure 3.23. Note that the fit is not very good in the lower part of the range of Y2.
Figure 3.23 Weibull Distribution Fit
7.
8.
The probability plot for the Weibull(2) distribution fit appears in Figure 3.24. Note that the mixture of two Weibull distributions helps better capture the distribution in the lower part of the range of Y2.
Figure 3.24 Weibull(2) Competing Risk Mixture Distribution Fit

Help created on 3/19/2020