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What kind of test is being used for the following hypothesis and what would a z-statistic of 1.68 tell us about a hypothesis with the appropriate test and a level of significance of 5%, respectively?
H0: B ≤ 0 A. One-tailed test; fail to reject the null. B. Two-tailed test; fail to reject the null. C. One-tailed test; reject the null. |