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Compute the observed statistic for a correlated groups t-test to evaluate the difference in vocabulary scores...

Compute the observed statistic for a correlated groups t-test to evaluate the difference in vocabulary scores for a sample of children pre- and post-training. Be sure to keep the values in the given order. [Pre-: 4, 2, 4, 5, 5, 6, 4, 4, 2; Post-: 5, 2, 6, 6, 7, 5, 4, 5, 7]

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Paired t test

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