caluclating sample size

6:43

5:39

6:37

10:36

3:36

9:49

28:06

2:23

4:42

2:50

2:46

8:14

4:46

2:44

20:24

16:26

2:48

6:33

10:56

5:04

2:51

7:14

2:18

3:49

6:29

1:01:09

28:09

15:42

8:21

6:32

32:35

15:50

17:57

14:12

9:57

5:26

00:45

6:12

6:46

4:02

7:04

1:51

7:12

9:09

8:49

4:48

6:28

3:05

5:25

3:42

21:29

2:43

3:42

4:19

13:56

10:28

5:53

11:22

12:54

2:06