ll One research group claims that they are able to predict a child's cholesterol level (mg/dl) at the end of an 8-week exercise and medication program based on the child's weight change in the first week of the regimen (weight change is defined as initial weight weight after 1 week so that negative values correspond to weight gain while positive values correspond to weight loss; note that weight change is measured in decagrams (dg)). To support their claim, the research group collected data on 50 children with high cholesterol who were enrolled in their program. Below is the output from a simple linear regression analysis where the model has cholesterol level at the end of treatment as the response and weight change after 1 week as the predictor. Coefficients: Estimate Std. Error t value Pr(>|t|) (Intercept) 191.91900 1.68200 114.102