Suppose you did a study comparing the critical thinking skills of psychology majors and philosophy majors. You collect the data found in the following table. Each number is a score on a test of critical and logical thinking. Scores can range from a low of 5 to a high of 80. Calculate a complete set of descriptive statistics, 95% confidence intervals, a t test, and an effect size index. On the basis of what you have calculated, what would you conclude from the study? Here are the scores on the critical thinking test:

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Psychology Majors 67 53 74 60 49 55 65 72 60 63 Philosophy Majors 58 62 44 51 51 47 43 55 61 67