A researcher conducts a hypothesis test to evaluate the effect of a treatment. The hypothesis test produces a z-score of z = -2.60. Assuming that the researcher is using a two-tailed test, what is the correct statistical decision?
Reject the null hypothesis with α = .05 but not with α = .01. |
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Reject the null hypothesis with either α = .05 or α = .01. |
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Fail to reject the null hypothesis with either α = .05 or α = .01. |
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cannot answer without additional information |
as we know that critical value for two-tailed test at 0.05 and 0.01 level is -/+1.96 and -/+ 2.58 ,
for test statistic falls in rejection region for both of critical value : therefore:
Reject the null hypothesis with either α = .05 or α = .01. |
A researcher conducts a hypothesis test to evaluate the effect of a treatment. The hypothesis test...
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