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If I think that students who are in the Cheese club who have a car have...

If I think that students who are in the Cheese club who have a car have a higher GPA than the members of the cheese club who don't have a car and all the students in the other clubs, what statistic will I use to test his hypothesis?

I believe that it should be a multiple regression, but I would like an explanation as to what it is and why, thank you

Math   Statistics-And-Probability   
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