1.

For a low value of df thec2distribution is ____.

normally distributed

positively skewed

negatively skewed

none of the above

2. Exhibit 17-8 The value ofc2obtfor the table in Exhibit 17-8 is ____.

47.43

17.96

4.07

9.71

3. Exhibit 17-4 A student at a Midwest college is interested in whether Psychology majors spend more or less time studying than English majors. She randomly selects 8 Psychology majors and 8 English majors and determines their weekly studying time. The following are the scores. Note one person dropped out of the study

Psychology Majors	16	12	13	10	9	10	8
English Majors	10	25	15	17	23	14	19	18

Refer to Exhibit 17-4. Usinga= 0.052 tail, what do you conclude?

rejectH0; there is a significant difference in the amount of time Psychology and English majors study

rejectH0; there is no difference in the amount of time Psychology and English majors study

acceptH0; there is no difference in the amount of time Psychology and English majors study

retainH0; there is no difference in the amount of time Psychology and English majors study

4. Exhibit 17-4 A student at a Midwest college is interested in whether Psychology majors spend more or less time studying than English majors. She randomly selects 8 Psychology majors and 8 English majors and determines their weekly studying time. The following are the scores. Note one person dropped out of the study

Psychology Majors	16	12	13	10	9	10	8
English Majors	10	25	15	17	23	14	19	18

Refer to Exhibit 17-4. Ifa= 0.052 tail,Ucrit= ____.

7

10

46

49

5. Exhibit 17-4 A student at a Midwest college is interested in whether Psychology majors spend more or less time studying than English majors. She randomly selects 8 Psychology majors and 8 English majors and determines their weekly studying time. The following are the scores. Note one person dropped out of the study

Psychology Majors	16	12	13	10	9	10	8
English Majors	10	25	15	17	23	14	19	18

Refer to Exhibit 17-4. The value ofUobtis ____.

6

50

14

42

6. The Mann-WhitneyUtest uses ____.

only the direction of the scores

only the magnitude of the scores

both the magnitude and direction of the scores

only the mean of the scores

7. A Mann-WhitneyUvalue of zero indicates ____.

you can reject the null hypothesis

low degree of separation between the scores of each group

zero difference between the two groups

high degree of separation between the scores of each group

8. For any given alpha level,c2crit____.

increases with increases inN

decreases with increases inN

increases with increases in degrees of freedom

decreases with increases in degrees of freedom