Is there a good reason to believe that evening customers purchase, on average, more

than day customers? Support your answer by performing a statistical test on the

difference between the mean day purchase and the mean evening purchase (using a

two-tailed test).

Day Customers

Purchase Revenue	Purchase Cost
32.50	23.89
35.22	25.90
39.99	30.40
23.08	16.53
39.48	28.32
30.55	20.17
24.77	18.49
30.13	21.11
31.16	24.91
34.67	25.75
32.37	25.03
40.71	29.61
33.07	23.31
43.86	29.51
45.88	36.39
42.31	29.83
36.69	29.89
43.59	28.51
31.38	23.55
32.09	21.66
26.78	17.93
26.39	18.38
33.84	22.96
32.39	25.24
25.29	17.72
21.11	14.41
27.60	22.23
37.79	25.50
38.37	29.00
27.14	21.31

Evening Customer

Purchase Revenue	Purchase Cost
40.29	32.00
34.66	25.20
35.87	24.01
36.40	28.60
30.95	24.95
33.69	22.42
33.82	25.89
34.92	23.07
35.15	25.39
32.89	22.99
36.30	28.63
38.44	29.51
32.49	25.36
34.91	25.26
52.78	37.08
37.43	28.81
30.20	19.86
37.99	26.54
26.90	19.19
47.19	34.88
33.48	25.12
44.20	36.09
33.52	22.76
37.15	26.24
35.81	26.79
37.61	25.68
30.29	24.51
31.07	23.27
24.35	19.50
34.90	28.07

ALL Customers ***(Not Sure if this is needed for this test) ***

Purchase Revenue	Purchase Cost
32.50	23.89
35.22	25.90
39.99	30.40
23.08	16.53
39.48	28.32
30.55	20.17
24.77	18.49
30.13	21.11
31.16	24.91
34.67	25.75
32.37	25.03
40.71	29.61
33.07	23.31
43.86	29.51
45.88	36.39
42.31	29.83
36.69	29.89
43.59	28.51
31.38	23.55
32.09	21.66
26.78	17.93
26.39	18.38
33.84	22.96
32.39	25.24
25.29	17.72
21.11	14.41
27.60	22.23
37.79	25.50
38.37	29.00
27.14	21.31
40.29	32.00
34.66	25.20
35.87	24.01
36.40	28.60
30.95	24.95
33.69	22.42
33.82	25.89
34.92	23.07
35.15	25.39
32.89	22.99
36.30	28.63
38.44	29.51
32.49	25.36
34.91	25.26
52.78	37.08
37.43	28.81
30.20	19.86
37.99	26.54
26.90	19.19
47.19	34.88
33.48	25.12
44.20	36.09
33.52	22.76
37.15	26.24
35.81	26.79
37.61	25.68
30.29	24.51
31.07	23.27
24.35	19.50
34.90	28.07