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1. A study of the relation between the waistline and percent body fat in men yielded the data shown (waistline measureme
Posted: Mon May 09, 2022 12:45 pm
by answerhappygod
- 1 A Study Of The Relation Between The Waistline And Percent Body Fat In Men Yielded The Data Shown Waistline Measureme 1 (211.09 KiB) Viewed 26 times
1. A study of the relation between the waistline and percent body fat in men yielded the data shown (waistline measurement in inches). waistline (2) 34.7 percent fat (y) 21.8 46.5 33.6 32.8 13.4 41.3 27.1 29.8 13.7 39.3 30.2 35.7 18.5 29.0 11.2 ΕΎ= 36.1375 y=21.1875 SSxx = 248.53875 SSxy = 332.67375 SSyy = 494.30875 (a) Find the proportion of the variability in percent body fat that is accounted for by the size of the waistline. Explain fully. (b) Find the regression line for predicting y from x. (c) Construct a 95% confidence interval for the average percent body fat of all men whose waistline size is 34.0 inches. (d) test HO : Beta1 is O vs. Ha : Beta1 is not 0, compute the appropriate test statistic and p-value, then make your decision at a = 0.05. (e) Construct a 90% confidence interval for beta1. (f) Compute a 90% confidence interval for the average percent fat when waistline is 35.