Example
1 - Independent Samples
You are interested in the effects of an anti-anxiety drug on weight loss. The drug group (7 rhesus monkeys) received the drug while the control (placebo) group (6 rhesus monkeys) was given a sugar pill (placebo). The monkeys were tested every Monday for 7 weeks. Their results served as the dependent variable. The H0 was that the drug had no effect on weight. The H1 was that the drug had an effect on weight.
40
57
37
49
42
74
47
68
26
57
52
39
34
Placebo
groups X2
Drug group X1
Number of ounces
for all weeks