In a testing hypothesis problem, if the test is a left tail test, then the rejec

Question

In a testing hypothesis problem, if the test is a left tail test, then the rejection region is: none of these answers often, but not always in the left tail of the sampling distribution of the test statistic under the null hypothesis. always in the right tail of the sampling distribution of the test statistic under the alternative hypothsis. always in the left tail of the sampling distribution of the test statistic under the null hypothesis, e. always in the right tail of the sampling distriubtion of the test statistics under the null hypothesis.

Explanation / Answer

Yes, in a testing of hypothesis problem if the test is left tailed then the rejection region is

d. always in the left tail of the sampling distribution of the test statistic under the null hypothesis.

In a lower-tailed test the decision rule has investigators reject H0 if the test statistic is smaller than the critical value.

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