A scientist was interested in studying if students beliefs a

A scientist was interested in studying if students beliefs about illegal drug use change as they go through college. A scientist randomly selected 104 students and asked them before they entered college if they thought that illegal drug use was wrong or o.k. Four years later, the same 104 students were asked if thought that illegal drug use was wrong or o.k. The scientist decided to perform McNemar\'s test. The data is below. Are the assumptions met?

After College,O.K.

After College, Wrong

Before college, O.K.

4

17

Before College, Wrong

18

65

	After College,O.K.	After College, Wrong
Before college, O.K.	4	17
Before College, Wrong	18	65

Solution

Yes, YN + NY is greater than or equal to 30.