Problem 3.

10

±

A new contract was written with Company A with the following stipulations:

Cpk =

1.4, Specification Nominal (N) =

The Supplier found that their process average of

by as much as

10 could vary

0.2 mils.

The Supplier decided to monitor quality

with a P-Chart (n =

50). Find the following:

0:

Pbar:

UCLp:

Reject Rate (RR):

PPM

LCLp:

NOTE: P-Chart Calculations are separate from the Cpk calculations. The

o is derived from the Cpk minimum.

0.5 mils.