D Question 9 5 pts Which of the following is an assumption for computing any type of independent sample t test? 0 Data in the population being sampled are normally distributed. 0 Data were obtained from a sample that was selected using a random sampling procedure. 0 The probabilities of each measured outcome in a study are independent. 0 all of these D Question 10 5 pts A researcher conducts a study measuring differences in productivity among employees placed on either a continuous or intermittent reward schedule. Assuming that the population variance in unknown, what t test is appropriate for this study? 0 one-sample t test 0 two-independent-sample t test 0 Cohen's mean test 0 not enough information D Question 11 5 pts Atype of factor in which different participants are observed in each group, or at each level of the factor, is called ______ . O within-subjects factor Q repeated measures factor 0 mixed factor Q between-subjects factor D Question 12 5 pts The less that scores overlap between groups, the the error variance. 0 larger 0 more valuable 0 smaller 0 more sizable D Question 13 5 pts A researcher conducts two t tests. Test 1 is a two-tailed test with a smaller sample size at a .05 level of significance. Test 2 is a two-tailed test with a larger sample size at a .05 level of significance. What do you know about the degrees of freedom for each test? O Test 1 is associated with larger degrees of freedom. O Test 2 is associated with larger degrees of freedom. O Each test is associated with the same degrees of freedom. O It depends; there is not enough information to answer this question. D Question 14 5 pts A researcher conducts two t tests. Test 1 is a one-tailed test with a smaller sample size at a .05 level of significance. Test 2 is a one-tailed test with a larger sample size at a .05 level of significance. What do you know about the critical values for each test? O Test 1 is associated with smaller critical values. O Test 2 is associated with smaller critical values. O Each test is associated with the same critical values.D Question 15 5 pts As a requirement for the t test, researchers compute any type of t test with samples selected from populations in which the population variance is known O the population size is very large the population variance is unknown the population is the same size as the sample D Question 16 5 pts Computing a two-independent-sample t test is appropriate when _. different participants are assigned to each of two groups the population variance is unknown participants are observed one time in a given group O all of these