15.35 Refer to the Johnson Filtration problem introduced in this section. Suppos

Question

15.35 Refer to the Johnson Filtration problem introduced in this section. Suppose that in addition to information on the number of months since the machine was serviced and whether a mechanical or an electrical repair was necessary, the managers obtained a list showing which repairperson performed the service. The revised data follow Repair Time in Hours Months Since Last Service Type of Repair Electrica Mechanica Dave Newton Electrica Repairperson Dave Newton 4.8 Bob Jones Dave Newton Dave Newton Bob Jones 1.8 Electrica Electrica Mechanical Bob Jones Mechanical Bob Jones 4.9 4.8 4.4 4.5 Electrica Bob Jones Electrica Dave Newton

Explanation / Answer

15.35 Refer to the Johnson Filtration problem introduced in this section. Suppose that in addition to information on the number of months since the machine was serviced and whether a mechanical or an electrical repair was necessary, the managers obtained a list showing which repairperson performed the service. The revised data follow Repair Time in Hours Months Since Last Service Type of Repair Electrica Mechanica Dave Newton Electrica Repairperson Dave Newton 4.8 Bob Jones Dave Newton Dave Newton Bob Jones 1.8 Electrica Electrica Mechanical Bob Jones Mechanical Bob Jones 4.9 4.8 4.4 4.5 Electrica Bob Jones Electrica Dave Newton

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