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A teacher wants to know if using music to teach math concepts to first graders would increase test scores. Test scores were collected before and
A teacher wants to know if using music to teach math concepts to first graders would increase test scores. Test scores were collected before and after the new teaching technique. What would be true of the results if the null hypothesis was rejected? There was no difference in test scores before and after the math music lesson The mean difference score computed from the math test scores was close to zero The mean difference score was significantly greater than zero The mean difference score was significantly lower than zero
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