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 listshowing which repairperson performed the service. The revised data follow.Time bo + b₁ Months + b₂ Type + b3 PersonRound your answers to three decimal places.Use Table 2 from Appendix B to determine the p-value.The p-value is less than 0.01What is your conclusion?The addition of Person isRepair Timein Hours2.83.04.71.92.94.84.24.94.34.4Use Table 4 from Appendix B to determine the p-value.The p-value is less than 0.01What is your conclusion?The overall model is not statistically significant Vc. Is the addition of the independent variable #3, the repairperson who performed the service, statistically significant? Use a = 0.05.Compute the t test statistic for the significance of 3 (to 2 decimals). Enter negative value as negative number.vMonths SinceLast Service26832798a. 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 ₂ = 1 if the type of repair is electrical and = 1 if Dave Newton performed theservice. Enter negative value as negative number.statistically significant.What explanation can you give for the results observed?Person is highly correlated with type of repair46bob₁b₂b3b. At the 0.05 level of significance, test whether the estimated regression equation developed in part (a) represents a significant relationship between the independent variables and the dependent variable.Compute F test statistic (to 2 decimals).Type of RepairElectricalMechanicalElectricalMechanicalElectricalElectricalMechanicalMechanicalElectricalElectricalRepairpersonV so once the effect of that is accounted for the addition of person will not add much.Dave NewtonDave NewtonBob JonesDave NewtonDave NewtonBob JonesBob JonesBob JonesBob JonesDave Newton

When the variables are associated with each other, one variable is used to find the value of the…

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 obtaine showing which repairperson performed the service. The revised data follow. Time by+by Months + b₂ Type +by Person Round your answers to three decimal places. bo Repair Time in Hours 2.8 3.0 4.7 Use Table 2 from Appendix B to determine the p-value. The p-value is less than 0.01 1.9 2.9 4.8 4.2 4.9 4,3 "What is your conclusion? The addition of Person is What explanation can you give for the results observed? Person is highly correlated with type of repair Months Since Last Service 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 ₂-1 if the type of repair is electrical and = 1 if Dave Newton performed service. Enter negative value as negative number. Use Table 4 from Appendix B to determine the p-value. The p-value is less than 0.01 "What is your conclusion? The overall model is not statistically significant v c. Is the addition of the independent variable #3, the repairperson who performed the service, statistically significant? Use a = 0.05. Compute the test statistic for the significance of 3 (to 2 decimals). Enter negative value as negative number. ✓statistically significant. 2 6 8 3 2 7 b₂ by by b. At the 0.05 level of significance, test whether the estimated regression equation developed in part (a) represents a significant relationship between the independent variables and the dependent variable. Compute F test statistic (to 2 decimals). Type of Repair Electrical Mechanical Electrical Mechanical Electrical Electrical Mechanical Mechanical Electrical Electrical Repairperson Dave Newton Dave Newton Bob Jones Dave Newton Dave Newton Bob Jones Bob Jones Bob Jones Bob Jones Dave Newton so once the effect of that is accounted for the addition of person will not add much.