EBK BUSINESS STATISTICS
7th Edition
ISBN: 9780134462783
Author: STEPHAN
Publisher: PEARSON CUSTOM PUB.(CONSIGNMENT)
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Johnson Filtration, Inc. provides maintenance service for water-filtration systems. 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.
Click on the datafile logo to reference the data.
DATA file
Repair Time
Months Since
in Hours
Last Service
Type of Repair
Repairperson
2.9
Electrical
Dave Newton
3.0
Mechanical
Dave Newton
4.8
8.
Electrical
Bob Jones
1.8
Mechanical
Dave Newton
2.9
Electrical
Dave Newton
4.9
Electrical
Bob Jones
4.2
6.
Mechanical
Bob Jones
4.8
8.
Mechanical
Bob Jones
4.4
4.
Electrical
Bob Jones
4.5
Electrical
Dave Newton
a. Ignore for now the months since the last maintenance service (1 ) and the repairperson who performed the service. Develop the
estimated simpe linear regression equation to predict the repair time (y) given the type of repair (2 ). Recall that…
A1
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Day
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Discharged_Patients
A
54
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110
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131
137
80
63
75
92
105
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95
72
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Records_not_Processed
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49
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An insurance company hires an actuary to determine whether the number of hours of safety drivingclasses can be used to predict the number of driving accidents for each driver. Identify theexplanatory variable, if any.
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