Problem
Use the cigconsump dataset, retaining only years 1985 and 1995. Regress lpackpc on lagers and linkup. Use the Breach Pagan test (hottest) for variable year. Save the residuals, and use rover to compute their variances by year. What does this test tell you?
The response should include a reference list. Double-space, using Times New Roman 12 pnt font, one-inch margins, and APA style of writing and citations.