A published study found that there is a correlation between the type of clothing people wear and how likely they are to make friends. In fact, one type of clothing was most preferred by the people who had the most friends. You want to have more friends, so you buy the clothing. Is this likely to increase your number of friends? Why, or why not? This is not likely to increase your number of friends. The game only caused more earnings for those who participated in the study. This will likely increase your number of friends, since the people in the study who liked the game earned more money. This is not likely to increase your number of friends. Just because the two variables are correlated does not mean wearing certain clothing causes a greater number of friends. This will likely increase your number of friends, since clothing preference is the best predictor of friendships