The value obtained for the test statistic, z, in a one-mean z-test is given. Whether the test is two tailed, left tailed, or right tailed is also specified. For parts (a) and (b), determine the...

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Extracted text: The value obtained for the test statistic, z, in a one-mean z-test is given. Whether the test is two tailed, left tailed, or right tailed is also specified. For parts (a) and (b), determine the P-value and decide whether, at the 1% significance level, the data provide sufficient evidence to reject the null hypothesis in favor of the alternative hypothesis. a. The test statistic in a right-tailed test is z= 2.44. The P-value is . (Round to three decimal places as needed.) sufficient evidence to reject the null hypothesis in favor of the the significance level. At the 1% significance level, the data alternative hypothesis because the obtained P-value is b. The test statistic in a right-tailed test is z= - 1.86. The P-value is (Round to three decimal places as needed.) At the 1% significance level, the data sufficient evidence to reject the null hypothesis in favor of the alternative hypothesis because the obtained P-value is the significance level.