AaBbCcDdE AaBbCeDdI AaBbCcDd Aa Normal Strong Subtitle Title Text Box ShapePic c

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AaBbCcDdE AaBbCeDdI AaBbCcDd Aa Normal Strong Subtitle Title Text Box ShapePic c. variability between groups and within groups will tend 1o be about the same d. total variability will tend to exceed variability between groups and within groups Questions 12-16 refer to the following experiment: A research psychologist wants to determine if alcohol consumption affects the amount of dreamtime, as measured by rapid eye movements, among young adult volunteers. The dreamtimes are monitored for each of 20 volunteers during two sleep periods: one sleep period following a controlled evening of excessive alcohol consumption. 11. To analyze the test results, the research psychologist should use a t test for two a. b. c. d. matched samples because subjects are all young adults equal numbers of subjects participate in both periods the same subjects is measured twice each subject is monitored for rapid eye movement 12.--The number of degrees of freedom equals a. 18 b. 19 c. 20 d. 38 13 Given only the information above, it would be appropriate to test the null hypothesis with a a two-tailed test at the .05 level of significance b. c. one-tailed test, lower tail critical, at the .05 level of significance one-tailed test, upper tail critical, at the 05 level of significance d.either a one- or two tailed test, but at the 001 level of significance 14. It would be most important that subjects experience the two conditions irn 21. The chi-square test is designed for use when obseryatien Lehman Coilege Dept, of Health 21.--The chi-square test is designed for use when observatons are clasefed to

Explanation / Answer

11) c -option

in two matched test or paired t test we use same data before and after the test applied

12) option d

degrees of freedom for paired t test is n1+n2-2 = 20+20-2=38

13) option a

It is two tailed with 5% los

15) option d

different scores are there for each time

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