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31. What is the correct decision in a hypothesis if the data produce a t-statistic that is in the critical region?

A. Reject H0 B. Fail to reject H0 C. Reject H1 D. Fail to reject H1

32. How does the shape of the t distribution compare to the normal distribution? A. The t distribution is taller and less spread out, especially when n is large. B. The t distribution is taller and less spread out, especially when n is small. C. The t distribution is flatter and more spread out, especially when n is large. D. The t distribution is flatter and more spread out, especially when n is small.

33. Suppose you wanted to apply a one-tailed test as opposed to a two-tailed test. How would you covert a significance of p = .284? A. .284 / 2 = .142 B. .284 2 = .568 C. .284 / 0.05 = 5.68 D. .284 0.05 = .0142

34. A research report summarizes the results of a t-test by stating: t(35)=5.2, p<0.05. Which of the following is a correct interpretation of this report? A. The H0 was not rejected and the probability of a Type I error is less than .05. B. The H0 was not rejected and the probability of a Type II error is less than .05. C. The H0 was rejected and the probability of a Type I error is less than .05. D. The H0 was rejected and the probability of a Type II error is less than .05.

35. Which of the following is true about a 95% confidence interval of the mean of a given sample: A. 95 out of 100 sample means will fall within the limits of the confidence interval. B. There is a 95% chance that the population mean will fall within the limits of the confidence interval. C. 95 out of 100 population means will fall within the limits of the confidence interval. D. There is a .05 probability that the population mean falls within the limits of the confidence interval.

36. What effect would increasing the sample size have on a confidence interval? A. The confidence interval would increase in size. B. The confidence interval would decrease in size. C. The confidence interval is unaffected by sample size. D. The confidence interval could either increase or decrease in size.

37. In an independent t-test output of SPSS, the Levene's test result is p = .006. What can we infer from this number? A. The means of both groups are assumed to be unequal. B. The means of both groups are assumed to be equal. C. The variances of both groups are assumed to be unequal. D. The variances of both groups are assumed to be equal.

38. What does ANOVA stand for? A. Analysis of values and averages. B. Analysis of variance. C. Analysis of variability. D. Analysis of non ordinal values.

39. What kind of variables would you crosstabulate? A. Two or more categorical. B. Two or more continuous. C. One continuous and two or more categorical. D. One categorical and two or more continuous.

40. Which statistical test is used to identify whether there is a relationship between two categorical variables? A. Student's t-test. B. Spearman's correlation test. C. Pearson's Chi-square test. D. Mann-Whitney test.