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If you read that the critical value determining the rejection region for a two-tailed hypothesis test--using $z$ as the test statistic--is $\pm 1.96$, what does this tell you about the level of $\alpha$ used for this test?

Here is a $z$ table:

A

It tells me that $\alpha = 1.00$.

B

It tells me that $\alpha = 0.025$.

C

It tells me that $\alpha = 0.05$.

D

It tells me that $\alpha = 0.10$.

E

Given the information presented, the level of $\alpha$ cannot be determined.

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