questions 10, 11, 12, 13, 14, & 15

Use the following to answer questions 10-15: A service center for electronic equipment is conducting a study on three of their technicians: Joe, John, and James. All three specialize in repairing DVD drives. The study was performed to study the service time of fixing the DVD drives. The manager of the service center wishes to assess if the average service times for their three technicians are equal: H: 07 = 0 = 0. Each technician was given a random sample of DVD drives, and the service time for each was recorded. The ANOVA table and descriptive statistics are given below: Descriptive Statistics Mean Variance Service Time $5.82 71.38 ANOVA Service Time Sum of Mean Squares diff Square F Sig. Between Groups 24.58 2 12.29 .166 .848 Within Groups Total 3116.00 12 74.19 3149.50 44 10. How many DVD drives were included in the study? A) 42 44 B) 43 D) 45 1 1, What is the value of an estimate of the common standard deviation? A) 3.51 C 8,61 B) 8.45 D) 12 29 12. Under the null hypothesis of equality of population means, what is the point estimate of the common mean? A) 0.166 24.5H B) 12.29 Dj 55.82 13. Under the null hypothesis of equality of population means, what is the appropriate model for the test statistic? A) F(2. 42) F(3. 44) B) /(2. 44) DI F(3. 45) 14. What is the value of the coefficient of determination R-? A) 0.0078 0.848 B) 0.166 D) 0.992 15. At the 5% significance level, would we reject the null hypothesis? A) Yes B) Na C) This cannot be determined from the information given