Hypothesis: There is no significant difference in test scores between students who study with music and those who study in silence., Students who study with music will have significantly different test scores compared to those who study in silence., There is a relationship between the amount of caffeine consumed and reaction times, but the direction of the relationship is not specified., Non hypothesis: The plant in the window grows faster than the one in the shade., The students were engaged and asked many questions during the science experiment., The chef carefully plated the dish, adding a garnish of fresh herbs.,

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