A two-tailed hypothesis test is being used to evaluate a treatment effect with a- 05. If the sample data produce a z-score of z-2.24, what is the correct decision? O Fail to reject the null hypothesis and conclude that the treatment has an effect O Fall to reject the mull hypothesis and conclude that the treatment has no effect O Reject the null hypothesis and conclude that the treatment has an effect O Reject the null hypothesis and conclude that the treatment has no effect

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