Johnson Filtration, Inc., provides maintenance service for water-filtration systems throughout southern Florida. 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 rerformed the service. The revised data follow. Repair Time Months Since in Hours Last Service Type of Repair Repairperson 3.0 Electrical Dave Newton 3.0 6. Mechanical Dave Newton 4.8 8. Electrical Bob Jones 1.9 Mechanical Dave Newton 2.9 2 Electrical Dave Newton 5.0 7. Electrical Bob Jones 4.2 9. Mechanical Bob Jones 4.7 8. Mechanical Bob Jones 4.5 4 Electrical Bob Jones 4.5 6. Electrical Dave Newton a. Develop the estimated regression equation to predict the repair time given the number of months since the last maintenance service, the type of repair, and the repairperson who performed the service. Assume that x2 = 1 if the type of repair is electrical and 23 =1 if Dave Newton performed the service. Enter negative value as negative number. Time = bo + bMonths + b2Type + b3 Person Round your answers to three decimal places. bo 1.847 b2
Johnson Filtration, Inc., provides maintenance service for water-filtration systems throughout southern Florida. 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 rerformed the service. The revised data follow. Repair Time Months Since in Hours Last Service Type of Repair Repairperson 3.0 Electrical Dave Newton 3.0 6. Mechanical Dave Newton 4.8 8. Electrical Bob Jones 1.9 Mechanical Dave Newton 2.9 2 Electrical Dave Newton 5.0 7. Electrical Bob Jones 4.2 9. Mechanical Bob Jones 4.7 8. Mechanical Bob Jones 4.5 4 Electrical Bob Jones 4.5 6. Electrical Dave Newton a. Develop the estimated regression equation to predict the repair time given the number of months since the last maintenance service, the type of repair, and the repairperson who performed the service. Assume that x2 = 1 if the type of repair is electrical and 23 =1 if Dave Newton performed the service. Enter negative value as negative number. Time = bo + bMonths + b2Type + b3 Person Round your answers to three decimal places. bo 1.847 b2
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.6: The Inverse Trigonometric Functions
Problem 91E
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