What are the critical z-values for a two-tailed hypothesis test if the significant level = 0.01? - 6712

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What are the critical z-values for a two-tailed hypothesis test if the significant level = 0.01? 

A.  ± 1.96 

B.  ± 2.33 

C.  ± 2.58 

D.  ± 1.65 

 
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1) What are