Fill in the blank: The critical value $z _ { \alpha / 2 }$ that corresponds to a _________% confidence level is 2.33.
A)88
B)90
C)98
D)99

Name: Fill in the blank: The critical value $z _ { \alpha / 2 }$ that corresponds to a _________% confidence level is 2.33. A)88 B)90 C)98 D)99
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The critical value $z _ { \alpha / 2 } = 2.33$ corresponds to a confidence level of 98%. This is because the tails (each) contain 1% of the area under the normal curve, leaving 98% in the center.

Fill in the Blank: the Critical Value zα/2z _ { \alpha / 2 }zα/2​

Fill in the Blank: the Critical Value $z _ { \alpha / 2 }$