Question: a professor refutes the claim that the average student spends 4.5 hours of studying for the final exam. to test the claim, the hypothesis is:

a professor refutes the claim that the average student spends 4.5 hours of studying for the final exam. to test the claim, the hypothesis is: Ho:mu=4.5 vs Ha: mu not equal 4.5 should be used.

a. true

b. false

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