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1.Students in Classroom A are given special classes to improve study skills. Classroom B does not receive these special classes.You are interested in comparing the

1.Students in Classroom A are given special classes to improve study skills. Classroom B does not receive these special classes.You are interested in comparing the mean GPA of Classroom A to the mean GPA of Classroom B. Please state:

a.The null hypothesis:

b.A directional research hypothesis:

c.The nondirectional research hypothesis:

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