A professor of linguistics refutes the claim that the average student spends 3 hours studying for the midterm exam. She thinks they spend more time than that. Which hypotheses are used to test the claim? H0: µ = 3 vs. H1: µ > 3 H0: µ = 3 vs. H1: µ ? 3 H0: µ ? 3 vs. H1: µ = 3 H0: µ = 3 vs. H1: µ < 3