Directional alternative hypotheses should be used when there is previous research to support the intervention.
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Q17: Null and alternative hypotheses refer to differences
Q18: Null and alternative hypotheses are stated in
Q19: Nondirectional alternative hypotheses often are used when
Q20: We can never be sure if a
Q21: Directional alternative hypotheses often are used when
Q23: The significance level or alpha should be
Q24: It is more difficult to reject the
Q25: If the calculated value of an F
Q26: To interpret fully an inferential statistic, it
Q27: Power is the probability of rejecting a
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