# Testing of hypothesis

2. Two groups, A and B, consist of 100 people each who have a disease. A serum is given to group A but not to group B (which is called the control group); otherwise, the two groups are treated identically. It is found that in groups A and B, 75 and 65 people respectively, recover from the disease.

a. At a significance level of a = 0.01, test the hypothesis that the serum helps cure the disease.

b. Now assume that each of the groups consists of 300 people, respectively, and that 225 people in group A and 195 people in group B are cured (the same proportion of cured patients as in part a). At a significance level of a = 0.01, again test the hypothesis that the serum helps cure the disease.

c. Are your results consistent in parts a and b?

https://brainmass.com/statistics/hypothesis-testing/testing-of-hypothesis-83343

#### Solution Summary

We use testing of hypothesis to test if the serum helps to cure the disease.