Exhibit 18-4 It Has Been Hypothesized That There Is No Difference in Difference

Multiple Choice

Exhibit 18-4
It has been hypothesized that there is no difference in the mathematical accuracy of men and women. A sample of men and women were given math tests. The scores on the tests are given below.
-Refer to Exhibit 18-4. The null hypothesis is to be tested at the 5% level. The decision rule is not to reject the null hypothesis if

A) -1.96 < z < 1.96
B) -1.645 < z < 1.645
C) z > 1.96 or z < -1.96
D) the number of "+" signs is greater than or equal to 2 but less than or equal to eight