An experiment was performed on metal ingots. The ingots were prepared with different heating and soaking times and then tested for readiness to roll. See Cox and Snell (1989). In JMP, the data are contained in the Ingots.jmp sample data table.
2.

From the red triangle next to Nominal Logistic Fit for ready, select Inverse Prediction.

3.

Delete the value for heat.

4.

Enter 2 for soak.

You want to predict heating time when soak is 2.
6.

Click OK.

When soak is 2, the predicted value of heat for which there is a 90% chance of an ingot being ready to roll is 39.60 with a 95% confidence interval from 32.09 to 57.29. When soak is 2, the predicted value for heat for which there is an 80% chance of an ingot being ready to roll is 49.49 with a 95% confidence interval from 39.90 to 78.71.