E) find a 90% confidence interval for y when x =4.1. lower limits and upper limits. use 1 decimal places for your answer

Paused Aviation and high-altitude physiology is a specialty in the study of medicine. Let x = partial pressure of oxygen in the alveoli (air cells in the lungs) when breathing naturally available air. Let y = 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 W 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 5.2 2.1 42.4 33.9 (units: mm Hg/10) 26.2 16.2 13.9 (units: mm Hg/10) (a) Verify that Ex = 21.9, Ly = 132.6, Ex= 110.39, Ey2 = 4089.06, Exy = 670.01, and r & 0.980. Ex 219 Ey 132.6 Ex2 110.39 4089 06 Exy 670.01 0:980 X (b) Use a 5% level of significance to test the claim that p > 0. (Use 2 decimal places.) t 8.61 O critical t 2.35 Conclusion 2 Reject the null hypothesis, there is sufficient evidence that p > 0. O Reject the null hypothesis, there is insufficient evidence that p > 0. Fail to reject the null hypothesis, there is insufficient evidence that p > 0. O O Fail to reject the null hypothesis, there is sufficient evidence that p > 0. (c) Verify that S. > 2.7258, a a -0.491, and b = 6.167. 2 7258 -0.4908 12:58 PM 4/23/20 6 167