Question
The manager of a computer repair service wants to determine whether there is a difference in the time it takes 4 technicians to repair 3
The manager of a computer repair service wants to determine whether there is a difference in the time it takes 4 technicians to repair 3 different brands of disk drives. The data below shows the time (in minutes) it took each technician to repair the disk drives. Answer the below questions by using the best technique learned not using SPSS.If using excel, use ANOVA - two factors without replication and show work. Perform the test at the alpha of .10:
Tech1 | Tech 2 | Tech 3 | Tech 4 | |
Brand A | 67 | 42 | 69 | 70 |
Brand A | 82 | 56 | 47 | 44 |
Brand A | 64 | 39 | 38 | 50 |
Brand B | 44 | 47 | 55 | 47 |
Brand B | 62 | 58 | 45 | 29 |
Brand B | 55 | 62 | 66 | 40 |
Brand C | 47 | 39 | 74 | 45 |
Brand C | 36 | 74 | 80 | 62 |
Brand C | 68 | 51 | 70 | 59 |
A. State the Null Hypothesis for Blocks (Technicians), resulting p Value for Blocks (Technicians), and the decision for Blocks (Technicians)
B. State the Null Hypothesis for Treatment (Brands), resulting p Value for Treatment (Brands), and decision for Treatment (Brands)
C. State the resulting p Value for Interaction and the decision for Interaction
D. Briefly discuss the test result of (a, b and c) with respect to any anomalies or unusual results that need further study for explanation.
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