Find the critical value. Assume that the test is two-tailed and that n denotes the number of pairs of data.

n =16, α = 0.01

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Using the calculator, critical value = 2.9208

confused bc only have these choices

-0.635

+/-0.635

0.635

+/-0.503

I used on line calculator but didn't get any of them.

Let me check

+/-0.635 is right choice

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