A researcher hypothesizes that people, on average, spend more money a week on gasoline than on food or clothing. She conducts a one-way ANOVA involving Gasoline (M = $51.40), Food (M = $24.57) and Clothing (M = $18.29). If she makes the decision to reject the null hypothesis, what is the MOST specific conclusion she can draw?
A) Money spent varies as a function of type of expense.
B) Money spent on gasoline is greater than food or clothing.
C) The money spent on the three expenses are all different from each other.
D) The analysis supports the research hypothesis.

Question

Quizplus · Accepted Answer

The one-way ANOVA tests if there is a significant difference in means among the groups. Rejecting the null hypothesis indicates that at least one group mean is different, but it doesn't specify which ones. Therefore, the most specific conclusion is that money spent varies as a function of type of expense.

A Researcher Hypothesizes That People, on Average, Spend More Money