For the leading health maintenance organization (HMO) firms, data file XR15014 lists the number of persons enrolled in the HMO along with the number of plans the firm administers. Given these data, determine the least-squares equation for predicting the total enrollment as a function of the number of plans administered. What would be the estimated total enrollment for an HMO firm that administered 20 plans?
Answer to relevant QuestionsWhat is the standard error of estimate, and what role does it play in simple linear regression and correlation analysis? For n = 6 data points, the following quantities have been calculated: a. Determine the least-squares regression line. b. Determine the standard error of estimate. c. Construct the 95% confidence interval for the mean of y ...Repeat Exercise 15.27, but with average retail units sold per dealer as the independent variable and with the 95% interval estimates assuming a dealer group for which the average number of retail units sold per dealer is ...The following table compares U.S. population (millions) with U.S. per-capita consumption of bottled water (gallons). a. Determine the least-squares regression line and the value of r. b. What proportion of the variability in ...Based on sample data, the 95% confidence interval for the slope of the population regression line is found to be from 4.2 to 6.7. Based on this information, what is the most accurate statement that can be made about the ...
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