Three different sections of the same Interstate highway, with roughly equal traffic volumes, have been patrolled by the State Police at different levels of intensity for the past six months.The posted speed limit is 55 and the speeds of a random sample of motorists have been registered for each of the three sections. Is there any statistically significant difference in the speeds? Use the five step model as a guide and write a sentence or two of interpretation for your results. What is the test statistic of the data

Lightly Patrolled	Moderately Patrolled	Heavily Patrolled
55	57	50
48	58	51
58	58	60
65	55	58
72	55	55
67	59	52
54	58	55
65	54	55