Question: Using a statistics program, consider again the relationship between the sales and profits of Fortune 500 companies that you analyzed in Exercise 38. In exercise

Using a statistics program, consider again the relationship between the sales and profits of Fortune 500 companies that you analyzed in Exercise 38.

In exercise

a) Find a 95% confidence interval for the slope of the regression line. Interpret your interval in context.
b) Last year, the drug manufacturer Eli Lilly, Inc., reported gross sales of $ 23 billion (that€™s $ 23,000 million). Create a 95% prediction interval for the company€™s profits, and interpret your interval in context.

Profits Sales Dependent variable s Profits R-squared-66.2% s-466.2 79 Count 79 Mean209.839 4178.29 Variable Coefficient SE(Coeff) Variance 635.172 49,163.000 Intercept176.644 61.16 Std Dev 796.977 7011.63 Sales 0.092498 0.0075

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