For questions 7-12, refer to the following...

For questions 7-12, refer to the following information: Researchers conducted a study to evaluate which of two medications, Drug A or Drug B, is more effective in treating headaches. Each patient was administered Drug A for one headache and Drug B for a different headache. The amount of time to pain relief was recorded in the table below. The sample standard deviation of the differences between the relief time of Drug A and the relief time of Drug B is 2.1213. Using a 0.05 significance level, you need to test the claim that the relief time for Drug A is different than the relief time for drug B.

Drug A Relief Time

20

40

30

45

19

27

32

26

Drug B Relief Time

18

36

30

46

15

22

29

25

1. What is the null hypothesis H0? (1 point)

a. 𝜇#=0

b. 𝜇#≠0

c. 𝜇!−𝜇"=0

d. 𝜇!−𝜇"≠0

e. 𝑥̅ −𝑥̅ =0 !"

f. 𝑥̅ −𝑥̅ ≠0 !"