An investigator finds that college students who drink alcohol excessively have academic achievement that is lower than other students who do not engage in this activity.She concludes that excessive drinking of alcohol results in decreased academic achievement.Which alternative hypothesis(s) should she investigate?

Question

Quizplus · Accepted Answer

The investigator should consider all alternative hypotheses: the possibility of a common cause affecting both academic achievement and excessive drinking (A), the chance that lower academic achievement could lead to excessive drinking rather than the other way around (B), and the impact of other independent variables that might influence both academic achievement and drinking habits (C).

An Investigator Finds That College Students Who Drink Alcohol Excessively