Lucille is interested in the effects of alcohol consumption on style of play whi
ID: 3059729 • Letter: L
Question
Lucille is interested in the effects of alcohol consumption on style of play while playing the videogame Sims. She asks a group of 120 college students to play Sims under one of the following conditions: no alcohol, 1 ounce of alcohol, 2 ounces of alcohol, or 3 ounces of alcohol. Lucille measures on a scale of 1 to 10 how prosocial the students' style of play is. After collecting the data, Lucille performs an ANOVA and finds that she can reject the null hypothesis. On this basis, what does Lucille know?
She knows that greater levels of alcohol consumption are associated with a more prosocial style of play.
She knows that there is a difference among the groups somewhere, but she does not know where.
She knows that moderate alcohol consumption is associated with prosocial play, but that greater alcohol consumption is associated with an antisocial style of play.
She knows that drinking any amount of alcohol affects the style of play.
a.She knows that greater levels of alcohol consumption are associated with a more prosocial style of play.
b.She knows that there is a difference among the groups somewhere, but she does not know where.
c.She knows that moderate alcohol consumption is associated with prosocial play, but that greater alcohol consumption is associated with an antisocial style of play.
d.She knows that drinking any amount of alcohol affects the style of play.
Explanation / Answer
Answer: Option D - She knows that drinking any amount of alcohol affects the style of play.
When ANOVA analysis is performed, the null and alternate hypothesis are
H0: mu1 = mu2 = mu3 = mu4
H1: at least two means are different
Now, Lucille has rejected the null hypothesis. This means there are significant evidence to conclude that at least two means are different. This means drinking alcohol affects the style of play but it does not give any information about the quantity of alcohol.
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