Plastic pellet weight data

A manufacturer uses two machines to make plastic pellets. A quality engineer wants to assess the process capability of each machine. The engineer randomly samples 50 pellets from each machine and records the weight of each pellet. The specification range is 12 g to 25 g. The engineer knows that the weight of the pellets follows a Weibull distribution.

You can use this data to demonstrate Nonnormal Capability Analysis for Multiple Variables.