SMOKERS-BMI	NONSMOKERS-BMI
36.5	45.0
23.1	23.9
20.2	40.2
29.6	34.7
24.9	23.5
19.9	20.7
25.8	32.4
26.0	30.2
33.7	37.2
23.4	29.4
32.7	26.5
26.8	30.5
18.1	20.0
21.3	29.4
23.9	31.1
25.2	28.9
22.8	36.9
29.7	29.1
31.2	31.6
44.2	21.9
29.3	34.6
31.6	27.5
35.0	21.6
27.1	25.8
29.6	25.7
26.8	26.2
29.2	21.5
27.6	29.4
26.2	34.6
30.7	24.4
33.9
31.5
26.4

1. Explain which hypothesis test would be appropriate for this situation (assume population variances are not known and sample variances are not equal).

2. Explain whether this is a left-tailed, right-tailed, or two-tailed test and justify your choice.