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.
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.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 38HP
Related questions
Question
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 5 steps with 28 images
Recommended textbooks for you
Glencoe Algebra 1, Student Edition, 9780079039897…
Algebra
ISBN:
9780079039897
Author:
Carter
Publisher:
McGraw Hill
College Algebra (MindTap Course List)
Algebra
ISBN:
9781305652231
Author:
R. David Gustafson, Jeff Hughes
Publisher:
Cengage Learning
Holt Mcdougal Larson Pre-algebra: Student Edition…
Algebra
ISBN:
9780547587776
Author:
HOLT MCDOUGAL
Publisher:
HOLT MCDOUGAL
Glencoe Algebra 1, Student Edition, 9780079039897…
Algebra
ISBN:
9780079039897
Author:
Carter
Publisher:
McGraw Hill
College Algebra (MindTap Course List)
Algebra
ISBN:
9781305652231
Author:
R. David Gustafson, Jeff Hughes
Publisher:
Cengage Learning
Holt Mcdougal Larson Pre-algebra: Student Edition…
Algebra
ISBN:
9780547587776
Author:
HOLT MCDOUGAL
Publisher:
HOLT MCDOUGAL
Functions and Change: A Modeling Approach to Coll…
Algebra
ISBN:
9781337111348
Author:
Bruce Crauder, Benny Evans, Alan Noell
Publisher:
Cengage Learning
Algebra: Structure And Method, Book 1
Algebra
ISBN:
9780395977224
Author:
Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:
McDougal Littell