Five students in a large lecture class compared their scores on two exams. Looks like the class

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Five students in a large lecture class compared their scores on two exams. "Looks like the class mean was higher on the second exam," Bob said.
(a) What kind of test would you use?
(b) At α = .10, what is the critical value?
(c) Do you agree with Bob? Explain.
Five students in a large lecture class compared their scores
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