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Which of the following can be used by the researcher to decrease the width of the confidence interval? (Select all that apply.) A. Increase the confidence level OB. Decrease the confidence level C. Increase the sample size OD. Decrease the sample size

Which of the following can be used by the researcher to decrease the width of the confidence interval? (Select all that apply.) A. Increase the confidence level OB. Decrease the confidence level C. Increase the sample size OD. Decrease the sample size

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Xarelto is a drug that can be used as a blood thinner for patients who have a pulmonary embolism or other blood clotting condition. Researchers wanted to determine if there was a difference in blood viscosity (measured in mPA S) that might be attributed to the drug. In a study, a random sample of 7 patients who had a family history of blood clotting disorders were treated with Xarelto for two months. Their blood viscosity was measured before and after the treatment. The data are shown the table below: Blood Viscocity (mPA. S) Patient 1 2 3 4 5 6 7 y S Before 6.7 7.1 5.6 6.9 7.5 6.8 5.7 6.61 0.71 After 4.3 4.6 6.7 4.4 6.0 4.9 5.8 5.24 0.92 Difference After - Before -2.4 -2.5 1.1 -2.5 -1.5 -1.9 -0.1 -1.37 1.42
Transcribed Image Text:Xarelto is a drug that can be used as a blood thinner for patients who have a pulmonary embolism or other blood clotting condition. Researchers wanted to determine if there was a difference in blood viscosity (measured in mPA S) that might be attributed to the drug. In a study, a random sample of 7 patients who had a family history of blood clotting disorders were treated with Xarelto for two months. Their blood viscosity was measured before and after the treatment. The data are shown the table below: Blood Viscocity (mPA. S) Patient 1 2 3 4 5 6 7 y S Before 6.7 7.1 5.6 6.9 7.5 6.8 5.7 6.61 0.71 After 4.3 4.6 6.7 4.4 6.0 4.9 5.8 5.24 0.92 Difference After - Before -2.4 -2.5 1.1 -2.5 -1.5 -1.9 -0.1 -1.37 1.42
Which of the following can be used by the researcher to decrease the width of the confidence interval? (Select all that apply.) A. Increase the confidence level OB. Decrease the confidence level OC. Increase the sample size OD. Decrease the sample size
Transcribed Image Text:Which of the following can be used by the researcher to decrease the width of the confidence interval? (Select all that apply.) A. Increase the confidence level OB. Decrease the confidence level OC. Increase the sample size OD. Decrease the sample size
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