Solutions Statistics

There are four auto body shops in a community and all claim to promptly serve customers. To check if

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:

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
Between Groups	23.37321	3	7.791069	9.612506	0.001632
Within Groups	9.726167	12	0.810514
Total	33.09938	15
Summary
Groups						Count	Sum	Average	Variance
ANOVA
Source of Variation	SS	df	MS	F	p -value