11. In the SPSS output of an independent t-test in which the mean scores of two

Question

11. In the SPSS output of an independent t-test in which the mean scores of two groups: 14 girls and 16 boys were compared, what number would be presented as the df? A. 30 B. 29 C. 28 D. Not enough information to determine 12. When comparing group differences where no direction of the difference is specified, which one of the following is used? A. Two-tailed test B. One-tailed test C. Directional hvpothesis D. Critical value 13. In order to determine whether or not you will reject the null hypothesis, the test statistic (t-value or F-ratio) must be compared against the A. Obtained value B. Significance level C. df D. Critical Value 14. If the obtained value you generated is greater than the critical value (as presented in a Table of Critical Values) what should you do? A. Reject the null hypothesis B. Accept the null hypothesis C. Set a higher p value D, Increase the sample size 15. If the obtained value is greater than the critical value (as presented in a Table of Critical Values), what do you

Explanation / Answer

11) c) df = 14+16 -2 = 30 -2 =28

12) a) Two tailed t test

13) d) Critical value

14) a) reject the null hypothesis

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