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For each confidence level in the table below, determine the right-tail area (α/2) and the corresponding critical z-value (zα/2)
For each confidence level in the table below, determine the right-tail area (α/2) and the corresponding critical z-value (zα/2).
Report right-tail area as decimal (not percent) accurate to 4 decimal places.
Report (positive) critical values accurate to 2 decimal places.
| Confidence Level | Right Tail Area (α/2) | Critical Value (zα/2) |
| 76.6% | ans? | ans? |
| 87.4% | ans? | ans? |
| 90.9% | ans? | ans? |
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