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12 May, 13:04

In a one-tailed test, the rejection region is located under one tail (left or right) of the corresponding probability distribution, while in a two-tailed test this region is located under both tails. a. True or False. b. True. c. False.

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  1. 12 May, 13:18
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    Both parts A and B of the statement are True

    Explanation:

    In a one-tailed test we are testing a hypothesis that includes a directional relationship, where that relationship is greater than or less than critical value located at the top/bottom 5% of the distribution. If the test statistic falls into this region, we reject the null hypothesis.

    When we are doing a two-tailed tests, the hypothesis does not include a directional relationship. We are looking for a mean value that is significantly greater (2.5%) and significantly less (2.5%) than the null hypothesis.
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