A quality inspector tested 41 copiers in an attempt to estimate the average failure rate of
the copier model. His study indicated that the number of failures decreased from two
years ago, indicating an increase in the reliability of the copiers. Describe the variable of
interest to the inspector.

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The Answer of A quality inspector tested 41 copiers in an attempt to estimate the average failure rate of
the copier model. His study indicated that the number of failures decreased from two
years ago, indicating an increase in the reliability of the copiers. Describe the variable of
interest to the inspector.

A Quality Inspector Tested 41 Copiers in an Attempt to Estimate