Maurice Tutor

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    Argosy University/ Phoniex University/
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Category > Management Posted 30 Dec 2017 My Price 5.00

40 mmHg of mercury

In Problem 7.5, make a test to determine whether or not pressure increases mean bleeding time. Use α = .05.

Problem 7.5

To study whether or not pressure exerted on the upper arm increases bleeding time, 39 persons had their upper arm subjected to a pressure of 40 mmHg of mercury and their fingers pricked. Their mean bleeding time was 2.192 min, and the standard deviation of their bleeding times was .765 min. Forty-three other persons acted as controls. No pressure was used for the controls, and their bleeding time was found to have a mean of 1.524 minutes and a standard deviation of .614min. Give a 95% confidence interval for the difference in bleeding times. Do you think pressure increases mean bleeding time? Why?

 

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Maurice Tutor
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Status NEW Posted 30 Dec 2017 10:12 PM My Price 5.00

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