Question

In each part, we have given the value obtained for the test statistic, z, in a one-mean z-test. We have also specified whether the test is two tailed, left tailed, or right tailed. Determine the P-value in each case and decide whether, at the 5% significance level, the data provide sufficient evidence to reject the null hypothesis in favor of the alternative hypothesis.
a. z = −1.25; left-tailed test
b. z = 2.36; right-tailed test
c. z = 1.83; two-tailed test


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  • CreatedAugust 13, 2015
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