A researcher expects a treatment to affect the scores for individuals in a population. The treatment is evaluated using a two-tailed hypothesis test, and the test produces z = +2.65. Based on this result, what is the correct statistical decision? a.           The researcher should reject the null hypothesis with α = .05 b.           The researcher should reject the null hypothesis with  α  = .01 c.           The researcher should fail to reject Ho with either α = .05 or α  = .01 d.           Cannot answer without additional information

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