There are four auto body shops in Bangor, Maine, 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:

Is there evidence to suggest a difference in the mean waiting times at the four body shops? Use the .05 significance level.

Transcribed Image Text:

Count Average 5.133333 Body ShopA Body Shop B Body Shop C Body Shop D ariance 0.323333 1.433333 0.748 0.595833 25.2 25.9 5.04 6.475 ANOVA Source of Variation Between Groups Within Groups p-value 0.001632 df MS 7.791069 0.810514 23.37321 9.612506 9.726167 33.09938 12 15 Total