An inspector samples bags of potato chips to see if they fall short of the weight, 14 ounces, printed on the bag. Samples of 20 bags are selected and the number with weight less than 14 ounces is recorded.
(a) Make a p chart using the centerline and control limits calculated for p0 = .5.
(b) Suppose that samples from ten different days have

underweight bags. Graph the corresponding proportions on your p chart.
(c) Identify any days where the chart signals "out of control."

Transcribed Image Text:

11 8 14 10 13 12 7 14 10 13