Let x be a random variable that represents the pH of arterial plasma (i.e., acidity of the blood). For healthy adults, the mean of the x distribution is u = 7.4.t A new drug for arthritis has been developed. However, it is thought that this drug may change blood pH. A random sample of 41 patients with arthritis took the drug for 3 months. Blood tests showed that x = 8.6 with sample standard deviation s = 3.0. Use a 5% level of significance to test the claim that the drug has changed (either way) the mean pH level of the blood.
Let x be a random variable that represents the pH of arterial plasma (i.e., acidity of the blood). For healthy adults, the mean of the x distribution is u = 7.4.t A new drug for arthritis has been developed. However, it is thought that this drug may change blood pH. A random sample of 41 patients with arthritis took the drug for 3 months. Blood tests showed that x = 8.6 with sample standard deviation s = 3.0. Use a 5% level of significance to test the claim that the drug has changed (either way) the mean pH level of the blood.
MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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![Let x be a random variable that represents the pH of arterial
plasma (i.e., acidity of the blood). For healthy adults, the mean
of the x distribution is u = 7.4.t A new drug for arthritis has
been developed. However, it is thought that this drug may
change blood pH. A random sample of 41 patients with
arthritis took the drug for 3 months. Blood tests showed that
x = 8.6 with sample standard deviation s = 3.0. Use a 5% level
of significance to test the claim that the drug has changed
(either way) the mean pH level of the blood.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fcca9d8d3-b796-4d41-98ee-a821c79d0861%2F9b340299-6515-4ecb-9956-11dd1e0db400%2Fize7bv.jpeg&w=3840&q=75)
Transcribed Image Text:Let x be a random variable that represents the pH of arterial
plasma (i.e., acidity of the blood). For healthy adults, the mean
of the x distribution is u = 7.4.t A new drug for arthritis has
been developed. However, it is thought that this drug may
change blood pH. A random sample of 41 patients with
arthritis took the drug for 3 months. Blood tests showed that
x = 8.6 with sample standard deviation s = 3.0. Use a 5% level
of significance to test the claim that the drug has changed
(either way) the mean pH level of the blood.
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