Sleep

Researchers compared two soporific drugs, drug A and drug B, on increasing hours of sleep in people with insomnia. The dataset from the study has been attached to this question. The values represent the change in sleep time (hours) from baseline under the effect of each drug. All participants received both drugs on different weeks. Is one drug more effective than the other? Which statistical test is the most appropriate to answer this question?

ID Drug A Drug B

1 0.7 1.9

2 -1.6 0.8

3 -0.2 1.1

4 -1.2 0.1

5 -0.1 0.2

6 3.4 4.4

7 3.7 5.5

8 0.8 1.6

9 0 1.3

10 2 3.4

• One-sample t-test
• Paired-samples t-test
• Independent samples t-test
• One sample z-test