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
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.


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  • CreatedMay 15, 2015
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