Title: Medical researchers conducted a study designed to evaluate the relationship between blood pressure ... Post by: maportil on Feb 19, 2023 Medical researchers conducted a study designed to evaluate the relationship between blood pressure (y), age (x1), and cholesterol (x2). They proposed a linear model. A total of 126 individuals were randomly sampled, and blood pressure, age, and cholesterol were recorded for each. The regression summary appears here: The regression equation is Blood Pressure = 45.5 + 1.03 Age + 0.032 Cholesterol Predictor Coef SE Coef T P Constant 45.54 50.73 0.90 0.371 Age 1.02866 0.03920 26.24 0.000 Cholesterol 0.0323 0.4071 0.08 0.937 S = 5.30434 R-Sq = 85.0% R-Sq(adj) = 84.7% Analysis of Variance Source DF SS MS F P Regression 2 19600.5 9800.2 348.32 0.000 Residual Error 123 3460.7 28.1 Total 125 23061.2 Predicted Values for New Observations New Obs Fit SE Fit 95% CI 95% PI 1 75.301 0.741 (73.833, 76.769) (64.699, 85.903) 2 75.624 4.219 (67.273, 83.975). (62.209, 89.040)XX 3 74.272 0.772 (72.744, 75.800) (63.662, 84.882) XX denotes a point that is an extreme outlier in the predictors. Values of Predictors for New Observations New Obs Age Cholesterol 1 25.0 25 2 25.0 135 3 24.0 125 What is a 95% confidence interval on the mean blood pressure for all 25-year-olds with a cholesterol level of 135? ▸ (73.833, 76.769) ▸ (67.273, 83.975) ▸ (72.744, 75.800) ▸ (62.209, 89.040) Title: Re: Medical researchers conducted a study designed to evaluate the relationship between blood pressure ... Post by: prospectjay on Feb 19, 2023 Content hidden
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