math QAs

Sheet1

non-smoker	smoker
18	16
22	20
21	14
17	21
20	20
17	18
23	13
20	15
22	17
21	21

Sheet2

Sheet3

1

2

3

4

5

6

7

8

9

A

B

C

D

E

non-smoker

smoker

18

16

22

20

21

14

17

21

20

20

17

18

23

13

20

15