- Twelve Healthy Men Who Did Not Exercise Regularly Were Recruited To Take Part In A Study Of The Effects Of Exercise On O 1 (126.89 KiB) Viewed 25 times
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, 0.26, 2.51). We fit the following linear regression model: Y; = a +B(xi – ) + €į, where €; ~ N (0,0%). = Choose the numerical answers (round to the first three decimal places) for (a) The point estimate of a is [Select ] (b) The point estimate of Bis [Select] (c) The point estimate of o2 is [Select ] (d) The 95% confidence interval for a is â+ [Select]