Question: 6. When using the Z-distribution, what is the Zc critical value for c=99% for constructing the confidence interval? A) 1.645 B) 2.58 C) 1.96 D)

6.

When using the Z-distribution, what is the Zc critical value for c=99% for constructing the confidence interval?

A) 1.645

B) 2.58

C) 1.96

D) -1.645

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