Minitab displays information about the distribution it uses to calculate sample size. This information consists of the parameter estimates you provide or those calculated using the planning values for the percentiles:
Distribution | Scale | Shape |
---|---|---|
Weibull | 6464.18 | 0.803708 |
For the insulation data, Minitab calculates sample sizes assuming a Weibull distribution with a scale of 6464.18 and shape of 0.8037.