. A recent drug survey showed an increase in the use of drugsand alcohol among local high school seniors as compared to thenational percent. Suppose that a survey of 100 local seniors and100 national seniors is conducted to see if the proportion of drugand alcohol use is higher locally than nationally. Locally, 65seniors reported using drugs or alcohol within the past month,while 60 national seniors reported using them.
                                                                 Ho:p1 = p2                                   Ha: p1 ? p2 |        2-PropZTest x1: n1: x2: n2: prop ≠p0 < p0 > p0 Calculate | 1-PropZTest p1 ? p2 Z= P= P’1= P’2= n1= n2= | |
Conclusion |
