Question

Baseballs used in the major leagues in the United States must adhere to strict standards. One such standard is that the weight must be between 5 and 5.25 ounces. One could look at this standard as a target weight of 5.125 ounces with a tolerance of +/– 0.125 ounces. The following data were taken from a random sample of 50 baseballs from a large production batch. The actual weight and deviation from the target weight are listed.
Using the specification limits as the control limits,
a) Create a run chart for the baseballs’ weights.
b) Is the process for making baseballs in control?
c) How many baseballs produced were out of spec?
d) When should the quality team have investigated the production process?


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  • CreatedMay 15, 2015
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