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The first 25 papers showed a mean score of77.1 with a standard deviation of 19.6, while the last 24 papers handed in showed a mean score of69.3 with a standard deviation of 24.9. Is this a significant difference at ? = .05? (a) State thehypotheses for a right-tailed test. (b) Obtain a test statistic and p-value assuming equal variances...
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The first 25 papers showed a mean score of77.1 with a standard deviation of 19.6, while the last 24 papers handed in showed a mean score of69.3 with a standard deviation of 24.9. Is this a significant difference at ? = .05? (a) State thehypotheses for a right-tailed test. (b) Obtain a test statistic and p-value assuming equal variances...
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