Question: A production process is designed to fill boxes with an average of 14 ounces of cereal. The population of filling w eights is norm ally

A production process is designed to fill boxes with an average of 14 ounces of cereal. The population of filling w eights is norm ally distributed with a standard deviation of 2 ounces. Inspectors take periodic sam ples of 10 boxes. The following sam ple m eans are obtained.

a. Construct an chart. Plot the sample means on the chart.

b. Can the firm conclude that the production process is operating properly? Explain. L056

13.7 14.2 13.9 14.1 14.3 13.9

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