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The difference between the means of participants' BB1 and BB2 scores is approximately **2.9**.

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The t-test comparing the mean BB2 scores between Group A and Group B resulted in a **T-statistic of 3.53** and a **P-value of 0.0078**. Since the P-value is less than 0.05, we reject the null hypothesis, indicating there is a significant difference in the BB2 mean scores between Group A and Group B.

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