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Is the following a two-tailed, left-tailed, or a right-tailed test? Ho: µ = 12 H1: µ...

Is the following a two-tailed, left-tailed, or a right-tailed test?

Ho: µ = 12

H1: µ < 12

Show the rejection and do not reject regions by drawling a sampling distribution curve assuming it is normally distributed.

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Answer #1

Solution: Given that
Ho: µ = 12

H1: µ < 12

=> left -tailed : The right tailed test and the left tailed test are examples of one-tailed tests. They are called “one tailed” tests because the rejection region (the area where you would reject the null hypothesis) is only in one tail. The two tailed test is called a two tailed test because the rejection region can be in either tail

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