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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
Physiology: Oxygen Aviation and high-altitude physiology is a specialty in the study of medicine. Let partial pressure of oxygen in the alveoli (air cells in the lungs) when breathing naturally available air. Let partial pressure when breathing pure oxygen. The (x, y) data pairs correspond to elevations from 10,000 feet to 30,000 feet in 5000-foot intervals for a random sample of volunteers. Although the medical data were collected using airplanes, they apply equally well to Mt. Everest climbers (summit 29,028 feet).
|
x |
6.7 |
5.1 |
4.2 |
3.3 |
2.1 (units: mm Hg/10) |
|
y |
43.6 |
32.9 |
26.2 |
6.2 |
13.9 (units: mm Hg/10) |
(a) Verify that Σx = 21.4, Σy = 132.8, Σx2= 103.84, Σy2= 4125.46, and r ≈ 0.984.
(b) Use a 1% level of significance to test the claim that ρ > 0.
(c) Verify that Se ≈ 2.5319, a ≈ -2.869, and b ≈ 6.876.
(d) Find the predicted pressure when breathing pure oxygen if the pressure from breathing available air is x = 4.0.
(e) Find a 90% confidence interval for y when x = 4.0.
(f) Use a 1% level of significance to test the claim that β > 0.
(g) Find a 95% confidence interval for β and interpret its meaning.
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