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In a study of the cognitive skills required for successful arguments, 62 psychology graduate students were equally divided into two groups. Group 1 was presented with arguments that always attempted to strengthen the favored position. Group 2 was presented with arguments that always attempted to weaken the nonfavored position. If you compare the mean ratings for the two groups with a small-sample t-test, assuming equal variances, determine the validity of this assumption at a= 0.05.
| Group 1 (Support favored position) | Group 2(Weaken opposing position) | |
| Sample size | 31 | 31 |
| Mean | 28.8 | 25.2 |
| Standard deviation | 12.8 | 12.2 |