Answer Happy

Twelve healthy men who did not exercise regularly were recruited to take part in a study of the effects of exercise on oxygen uptake. The response of interest is the change of maximum oxygen uptake after participating a 12-week exercise program. The ages of the 12 subjects are x = (21,22,23,24,25,26,27,28,29,30,31,32), the corresponding changes in maximal oxygen uptake are y = (-0.87, -10.74, -3.27, -1.97, 7.50, -7.25, 17.05, 4.96, 10.40, 11.05, 7.26, 2.51). We fit the following linear regression model: Y; = a + B (Xi – ) + €;, where €; ~ N (0,0%). = Choose the numerical answers (round to the first three decimal places) for

(a) The point estimate of a is [ Select ] 2.226 1.643 (b) The point estimate of ß is 2.469 3.053

(b) The point estimate of Biv[ Select ] 0.997 1.217 (c) The point estimate of o? 1.322 1.101

(c) The point estimate of o2 is v[ Select ] 40.210 47.722 (d) The 95% confidence intery 45.404 51.405

(d) The 95% confidence interval for a is â= [ Select ] 5.052 4.748 4.867 4.468

What is the interpretation of a in the previous linear regression

What is the interpretation of ß in the previous linear regression