Super Cola bottles soft drinks labeled “net weight 12 ounces.” Indeed, an overall process average of 12 ounces has been found by taking 10 samples, in which each sample contained 5 bottles. The OM team wants to determine the upper and lower control limits for averages in this process.

APPROACH c Super Cola first examines the 10 samples to compute the average range of the process.

Here are the data and calculations:

Now Super Cola applies Equations (S6-5) and (S6-6) and uses the A2 column of Table S6.1.

Transcribed Image Text:

SAMPLE WEIGHT OF LIGHTEST WEIGHT OF HEAVIEST BOTTLE IN SAMPLE OF n = 5 BOTTLE IN SAMPLE OF n = 5 RANGE (R;) = DIFFERENCE BETWEEN THESE TWO 1 11.50 11.72 .22 2 11.97 12.00 .03 3 11.55 12.05 .50 4 12.00 12.20 .20 5 11.95 12.00 .05 6 10.55 10.75 .20 7 12.50 12.75 .25 8 11.00 11.25 .25 9 10.60 11.00 .40 10 11.70 12.10 .40 R; = 2.50 ounces