[Step-by-Step] There are four auto body shops in a community and all claim to promptly serve customers. To check if there is any difference in service, customers
Question: There are four auto body shops in a community and all claim to promptly serve customers. To check if there is any difference in service, customers are randomly selected from each repair shop and their waiting times in days are recorded. The output from a statistical software package is:
Summary |
Groups Count Sum Average Variance |
Body Shop A 3 15.4 5.133333 0.323333 |
Body Shop B 4 32 8 1.433333 |
Body Shop C 5 25.2 5.04 0.748 |
Body Shop D 4 25.9 6.475 0.595833 |
ANOVA |
Source of Variation SS df MS F p -value |
Between Groups 23.37321 3 7.791069 9.612506 0.001632 |
Within Groups 9.726167 12 0.810514 |
Total 33.09938 15 |
Is there evidence to suggest a difference in the mean waiting times at the four body shops? Use the .05 significance level.
Deliverable: Word Document