Negative Precision on Sample Size

Question

I'm trying to do a sample size calculation for a reliability test in JMP.  If I choose a one sided Precision Interval and give JMP the censor time and posative precision number it gives me a sample size.  If I use the given sample size and clear the precision and hit continue then JMP gives me a negative precision.  I don't understand what a negative precision means.

vinceheesen · Accepted Answer

I found that this is an error with JMP version 9.  In version 10 the correct positive precision is displayed.