True or False? Assume a researcher recruits 150 African American and Caucasian i

Question

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 Sp value obtained while calculating the test statistic is approximately 1.14 mg.

Explanation / Answer

hence Sp =(1.85)1/2 =1.36

False

Caucasian African American x1                     = 6.100 x2                     = 4.300 s1                     = 1.700 s2                    = 0.900 n1                    = 75.000 n2                    = 75.000 pooled SD S2p= ((n1-1)s21+(n2-1)*s22)/(n1+n2-2)= 1.85

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.