To use a t procedure, which of the following must be true?

i. the standard deviation of the parent population must be unknown.
ii. the sample size must be small (less than 30).
iii. the parent population must be normally distributed.

a) i only
b) i and iii only
c) iii only
d) ii and iii only
e) i, ii, iii

C. The parent population must be normally distributed

Step-by-step explanation:

The parent population must follow a normal distribution in order to use a t procedure

step-by-step explanation:

compare

6. 104

7. 52/37

8. 2704

9. 140608

10. -52

11. |52|=52

12. 1/52

13. 156

14. 26

15. 40

16. 37

17. -364

18. 53 1/3

19. 50.96

20. 43 2/3

21. 78

22. 50.75

23. 47.63

24. 163.28

25. 10400

26. 338

27. 208

28. 2704 square inches

29. 312 square meters

30. don't know what its asking, tell me so i can tell you

31. 8490.56

32. 52 degrees would be an acute angle

33. 128 degrees

34. 20.8

35. 39

36. 208