A Machine Is Supposed to Fill Boxes to a Weight

question 12

Multiple Choice

A machine is supposed to fill boxes to a weight of 50 pounds. Every 30 minutes a sample of four boxes is tested; the results are given below.
What would be the value of the centerline that would be used in creating an R chart?

• A) 11.000 pounds
• B) 12.8000 pounds
• C) 50 pounds
• D) 49.567 pounds

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