19. The count of surface nonconformities in 1000 m2 of 20-kg kraft paper is given in the following table.

Determine the trial central line and control limits and the revised central line and control limits, assuming that out-of-control points have assignable causes.

Transcribed Image Text:

Lot Number Count of Nonconformities Lot Number 23 27 28 22222222 20 10 36 Count of Nonconformities 2 21 8 37 12 6 38 6 39 24 2 40 14 25 10 41 10 0640 26 8 42 10 43 29 30 31 32 02829 44 8 6 2 45 14 46 16 47 10 160 48 2 33 10 49 34 6 50 63 35 30