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A researcher is testing a hypothesis of a single mean. The critical z value for = 0.05 and a two-tailed test is +1.96. The observed

  1. A researcher is testing a hypothesis of a single mean. The critical z value for = 0.05 and a two-tailed test is +1.96. The observed test statistic is -1.85. The decision made by the researcher based on this information is to _________ the null hypothesis.

  1. Reject.
  2. Do not reject.
  3. Redefine
  4. Change the alternate hypothesis.

Explain

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