research methodology- problem

Sheet1

Miles Per Gallon
35.67
38.73
35.42
40.78
35.44
38.90
33.30
34.55
35.37
36.74
38.28
35.32
38.55
33.80
42.73
36.40
35.57
37.67
37.61
34.88
40.43
35.39
36.93
34.88
37.63
35.29
39.67
35.88
32.30
30.18
38.86
39.56
38.42
40.19
34.27
38.98
37.23
35.69
30.51
36.89
38.65
32.09
36.72
37.84
35.18
34.42
34.41
38.69
31.07
30.66
37.25
33.86
38.81
35.79
38.29
38.95
34.97
31.78
37.39
34.91
33.42
34.55
31.44
41.05
29.09
39.41
32.78
35.63
38.01
34.56
35.18
36.82
39.11
35.85
36.85
36.81
36.09
35.66
36.53
29.65

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A

B

Miles Per Gallon

35.67

38.73

35.42

40.78

35.44