Question: 4.22 A statistics professor warns her class that her second exam is always harder than the first. She tells her class that students always score

4.22 A statistics professor warns her class that her second exam is always harder than the first. She tells her class that students always score 10 points worse on the second exam compared to their score on the first exam. This means that the correlation between students' scores on the first and second exam is

(a) 1.

(b) -1.

(c) Can't tell without seeing the data.

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