When we change the p level that we use as a cutoff, there is a small change in step 4 of hypothesis testing.

Although 0.05 is the most commonly used p level, other values, such as 0.01, are often used. Let’s consider Exercise 7.50 on the Graded Naming Test.

a. Conduct step 4 of hypothesis testing for a twotailed test and p level of 0.01—determining the cutoff and drawing the curve.

b. Conduct step 6 of hypothesis testing for a p level of 0.01—making a decision.

c. With which p level—0.05 or 0.01—is it easiest to reject the null hypothesis? Explain.

d. If it is easier to reject the null hypothesis with certain p levels, does this mean that there is now a bigger difference between the samples? Explain.