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After conducting a survey of all his classmates, Luke discovers that the amount of money everyone spends buying snacks each month has a mean of $38. What does the mean say about the amount his classmates spend on snacks?

The majority of his classmates spend $38 per month buying snacks.
Half of his classmates spend more than $38 per month buying snacks.
Half of his classmates spend exactly $38 per month buying snacks.
If the amount spent on snacks per month by all his classmates is leveled, that amount would be $38.