Computer database GROWCO describes the characteristics of 100 companies identified by Fortune as the fastest growing. Two of the variables listed are revenue and net income (millions of dollars) for the most recent four quarters. Determine the linear regression equation describing net income as a function of revenue, then identify and interpret the slope, the coefficient of correlation, and the coefficient of determination. At the 0.05 level of significance, could the population slope and the population coefficient of correlation be zero? Determine the 95% confidence interval for the population slope.
Answer to relevant QuestionsDetermine the least-squares regression line for the data in Exercise 15.5, then calculate the sum of the squared deviations between y and ŷ. For the y and x values listed in file XR15065, obtain the simple linear regression equation, then analyze the residuals by (a) Constructing a histogram, (b) Using a normal probability plot, (c) Plotting the residuals versus ...McDonald’s Corporation has reported the following values for total revenues and net income during the 1998 to 2005 period. All data are in billions of dollars: Determine the least-squares regression equation line for ...The following data describe U.S. motor vehicle travel and fuel consumption from 2002 through 2006. The data represent billions of gallons consumed and billions of miles traveled, respectively. a. Determine the least-squares ...Given the data and regression analysis for Exercise 15.72, construct and interpret the 95% confidence and prediction intervals associated with a score of 60 on the sales aptitude test. In exercise
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