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). 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 statistically significant c. Is the addition of the independent variable z3, the repairperson who performed the service, statistically significant? Use a = 0.05. Compute the t test statistic for the significance of 23 (to 2 decimals). Enter negative value as negative number. Use Table 2 from Appendix B to determine the p-value. The p-value is greater than 0.10 What is your conclusion? The addition of Person is not O statistically significant. What explanation can you give for the results observed? Person is highly correlated with months since last service v ,so once the effect of that is accounted for the addition of person will not add much.
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). 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 statistically significant c. Is the addition of the independent variable z3, the repairperson who performed the service, statistically significant? Use a = 0.05. Compute the t test statistic for the significance of 23 (to 2 decimals). Enter negative value as negative number. Use Table 2 from Appendix B to determine the p-value. The p-value is greater than 0.10 What is your conclusion? The addition of Person is not O statistically significant. What explanation can you give for the results observed? Person is highly correlated with months since last service v ,so once the effect of that is accounted for the addition of person will not add much.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Question
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please assist with this NON GRADED assignment
![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).
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 statistically significant
c. Is the addition of the independent variable 23, the repairperson who performed the service, statistically significant? Use a = 0.05.
Compute the t test statistic for the significance of e3 (to 2 decimals). Enter negative value as negative number.
Use Table 2 from Appendix B to determine the p-value.
The p-value is greater than 0.10
What is your conclusion?
The addition of Person is not
statistically significant.
What explanation can you give for the results observed?
Person is highly correlated with months since last service v
so once the effect of that is accounted for the addition of person will not add much.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fa240a155-4ede-48a2-84a9-f79205bfc272%2F760a1fbd-55d9-4f51-9ab9-df2f233b9773%2F0jnp3f58p_processed.jpeg&w=3840&q=75)
Transcribed Image Text: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).
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 statistically significant
c. Is the addition of the independent variable 23, the repairperson who performed the service, statistically significant? Use a = 0.05.
Compute the t test statistic for the significance of e3 (to 2 decimals). Enter negative value as negative number.
Use Table 2 from Appendix B to determine the p-value.
The p-value is greater than 0.10
What is your conclusion?
The addition of Person is not
statistically significant.
What explanation can you give for the results observed?
Person is highly correlated with months since last service v
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 obtained a list showing which repairperson performed the service. The revised data follow.
Repair Time
Months Since
in Hours
Last Service
Type of Repair
Repairperson
2.8
2
Electrical
Dave Newton
3.1
Mechanical
Dave Newton
4.9
8
Electrical
Bob Jones
1.9
3
Mechanical
Dave Newton
2.9
2
Electrical
Dave Newton
4.9
7
Electrical
Bob Jones
4.2
Mechanical
Bob Jones
4.8
Mechanical
Bob Jones
4.3
4
Electrical
Bob Jones
4.5
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 xz = 1 if the type
of repair is electrical and æ3 = 1 if Dave Newton performed the service. Enter negative value as negative number.
Time = bo + bị Months + b Type + b3Person
Round your answers to three decimal places.
bo
b1
b2
b3](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fa240a155-4ede-48a2-84a9-f79205bfc272%2F760a1fbd-55d9-4f51-9ab9-df2f233b9773%2Fe12szpq_processed.jpeg&w=3840&q=75)
Transcribed Image Text: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 performed the service. The revised data follow.
Repair Time
Months Since
in Hours
Last Service
Type of Repair
Repairperson
2.8
2
Electrical
Dave Newton
3.1
Mechanical
Dave Newton
4.9
8
Electrical
Bob Jones
1.9
3
Mechanical
Dave Newton
2.9
2
Electrical
Dave Newton
4.9
7
Electrical
Bob Jones
4.2
Mechanical
Bob Jones
4.8
Mechanical
Bob Jones
4.3
4
Electrical
Bob Jones
4.5
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 xz = 1 if the type
of repair is electrical and æ3 = 1 if Dave Newton performed the service. Enter negative value as negative number.
Time = bo + bị Months + b Type + b3Person
Round your answers to three decimal places.
bo
b1
b2
b3
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