Question: Using the appropriate control chart, determine two-sigma control limits for each case: a. An inspector found an average of 3.9 scratches in the exterior paint

Using the appropriate control chart, determine two-sigma control limits for each case:

a. An inspector found an average of 3.9 scratches in the exterior paint of each of the automobiles being prepared for shipment to dealers.

b. Before shipping lawn mowers to dealers, an inspector attempts to start each mower and notes any that do not start on the first try. The lot size is 100 mowers, and an average of 4 did not start (4 percent).

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