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A researcher is testing a hypothesis of a single mean. The critical z value for = .05 in a two-tailed test is + 1.96. The

A researcher is testing a hypothesis of a single mean. The criticalzvalue for = .05 in a two-tailed test is+1.96. The observedzvalue from sample data is -2.11. The decision made by the researcher based on this information is to _____ the null hypothesis.

redefine

fail to reject

restate

reject

change the alternate hypothesis

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