8.59 Filled bottles of soft drink coming off a production line are checked for underfilling. One hundred bottles are sampled from each half-day’s production. The results for 20 such samples are listed in table below.

a Construct control limits for the proportion of defectives.
b Do all the observed sample fractions fall within the control limits found in part (a)? If not, adjust the limits for future use.

Transcribed Image Text:

Sample Defectives Sample Defectives 1 10 11 15 10 234567890 12 12 6 8 13 14 14 320 3 15 0 7 16 1 12 17 1 10 18 4 9 19 3 11 20 6