The maintenance manager at a trucking company wants to build a regression model to forecast the time until the first engine overhaul (Time in years) based on four predictor variables: (1) annual miles driven (Miles in 1,000s). (2) average load weight (Load in tons). (3) average driving speed (Speed in mph), and (4) oil change interval (Oil in 1,000s miles). Based on driver logs and onboard computers. data have been obtained for a sample of 25 trucks. The accompanying file contains relevant data. Click here for the Excel Data File a. Estimate the time until the first engine overhaul as a function of all four predictor variables. Note: Negative values should be Indicated by a minus sign. Round your answers to 2 decimal places. Time= OMG: B₁ = B₂= B3 = 84= 0: MA: At least one 8;> 0 ⒸM: B₁ = B₂= B₂ = 84 = 0: M₂: At least one B; <0 OM: B₁ = B₂ = B3 = 84 = 0: MA: At least one 8; = 0 b-2. Find the p-value. Miles + b-1. At the 10% significance level, are the predictor variables jointly significant? First, specify the competing hypotheses. O p-value < 0.01 0.01s p-value < 0.025 0.025 s p-value < 0.05 O 0.05 ≤ p-value < 0.10 p-value ≥ 0.10 Load + Speed + Oil
The maintenance manager at a trucking company wants to build a regression model to forecast the time until the first engine overhaul (Time in years) based on four predictor variables: (1) annual miles driven (Miles in 1,000s). (2) average load weight (Load in tons). (3) average driving speed (Speed in mph), and (4) oil change interval (Oil in 1,000s miles). Based on driver logs and onboard computers. data have been obtained for a sample of 25 trucks. The accompanying file contains relevant data. Click here for the Excel Data File a. Estimate the time until the first engine overhaul as a function of all four predictor variables. Note: Negative values should be Indicated by a minus sign. Round your answers to 2 decimal places. Time= OMG: B₁ = B₂= B3 = 84= 0: MA: At least one 8;> 0 ⒸM: B₁ = B₂= B₂ = 84 = 0: M₂: At least one B; <0 OM: B₁ = B₂ = B3 = 84 = 0: MA: At least one 8; = 0 b-2. Find the p-value. Miles + b-1. At the 10% significance level, are the predictor variables jointly significant? First, specify the competing hypotheses. O p-value < 0.01 0.01s p-value < 0.025 0.025 s p-value < 0.05 O 0.05 ≤ p-value < 0.10 p-value ≥ 0.10 Load + Speed + Oil
College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter4: Polynomial And Rational Functions
Section4.6: Rational Functions
Problem 11SC: Find the mean hourly cost when the cell phone described above is used for 240 minutes.
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