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Under which condition will the total combined area of the region of rejection be the smallest? (3 pts) A one-tailed z...

  1. Under which condition will the total combined area of the region of rejection be the smallest? (3 pts)
    1. A one-tailed z test for means using alpha=.01
    2. A two-tailed z test for means using alpha=.01
    3. A one-tailed z test for means using alpha=.05
    4. A two-tailed z test for means using alpha=.05
    5. A and B
    6. C and D
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Answer #1

The total combined area in the region of rejection in case of A and B is 0.01 and in case of C and D, its 0.05. Hence,

Total combined area in region of rejection will be smallest for A and B.

Option 1 is correct.

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