Homework SourseSubstance abuse has been a concern of the president of Rocky
Substance abuse has been a concern of the president of Rocky University for several years. Some faculty members in the university believe that substance abuse is more widespread at Rocky than at other universities, while other faculty members think that substance abuse is not a major problem in the college. To resolve some of these issues, the president of the university commissioned a study to assess the current substance abuse behavior of students at Rocky. As part of this study, an anonymous exit survey was administered to a sample of 90 students from this year
Solution
Let us consolidate the report as males and females as follows
| Binge | Marijuana | illegal drugs | Total | |
| Females | 8 | 10 | 14 | 42 |
| Males | 13 | 12 | 10 | 48 |
| Proportion females | 0.1904 | 0.2381 | 0.3333 | |
| Conf interval(90%) | (-0.0092,0.013) | (-0.001, 0.0148) | (-0.0113,0.0118) | |
| Proportion males | 0.2708 | 0.25 | 0.2083 | |
| conf int (90%) | (-0.0096, 0.015) | (-0.0094,0.01.44) | (0.0087,0.0129) |
