Stating the null and research hypotheses

Reference no: EM13496666

When we conduct a one-tailed test instead of a two-tailed test, there are small changes in steps 2 and 4 of hypothesis testing. Let’s consider Exercise 7-45 on the Graded Naming Test. (Note: For this example, assume that those from populations other than the one on which it was normed will score lower, on average. That is, hypothesize that the Canadians will have a lower score.)

a. Conduct step 2 of hypothesis testing for a one-tailed test—stating the null and research hypotheses in words and in symbols.

b. Conduct step 4 of hypothesis testing for a one-tailed test—determining the cutoff.

c. Conduct step 6 of hypothesis testing for a one-tailed test—making a decision.

d. Under which circumstance—a one-tailed or a two-tailed test—is it easier to reject the null hypothesis? Explain.

e. If it becomes easier to reject the null hypothesis under one type of test (one-tailed versus two-tailed), does this mean that there is now a bigger difference between the samples? Explain.

Reference no: EM13496666

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