Question: True or False For a two-tailed test using z values at the .05% significance level we reject H 0 if z -1.960 or if z

True or False For a two-tailed test using z values at the .05% significance level we reject H₀ if z -1.960 or if z 1.960

True or False Assume a researcher recruits 150 African American and Caucasian individuals taking warfarin to determine if there is a difference in the mean dosage of the medication needed to cause a decrease in their INR blood test. If the mean dosage for 75 Caucasian individuals required to get their INR blood test in range is 6.1 mg with a standard deviation of 1.7 mg and the mean dosage for 75 African American individuals required to get their INR blood test in range is 4.3 mg with a standard deviation of 0.9 mg, the S_p value obtained while calculating the test statistic is approximately 1.10 mg.

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