The driver of a diesel-powered automobile decided to test the quality of three types of diesel fuel sold in the area based on mpg. Test the null hypothesis that the three means are equal using the following data. Make the usual assumptions and take a = 0.05.-
|
Brand A: 38.7
|
39.2
|
40.1
|
38.9
|
|
|
Brand B: 41.9
|
42.3
|
41.3
|
|
|
|
Brand C: 40.8
|
41.2
|
39.5
|
38.9
|
40.3
|