4. After conducting a t test for independent means, if you significantly different from each other. , you are indicating that those means are a. reject the null hypothesis b. accept the null hypothesis c. do not reject the null hypothesis d. accept the alternative hypothesis 5. In which of the following situations would a researcher use the t test for dependent means? a. Comparing stress levels before and after an exam b. Comparing first graders and college students c. Comparing owners of hand guns and shot guns d. Comparing drug users and non-drug users 6. Using the following set of five difference (D) scores, what would the value of X, be? [-7, -3, -1, 2, 4]? a. 23 b. 4.60 C. -5.00 d. -1.00 7. For a study that contains two groups with a total of 18 participants, how many degrees of freedom are there for a dependent means t test? a. 16 b. 17 C. 18 d. 36 8. If a researcher was comparing number of arrests for 21-year-old male in one sample and 21-year-old male in another sample, the appropriate statistical test would be a. independent t test b. dependent t test c. test of proportions d. pooled variance estimate 9. Given the following data what would the obtained test statistic equal? Male Female Total Sample Size (N) 180 150 330 Driven under influence 81 48 129 a. 4.56 b. 4.41 C. 3.62 d. 2.41