Completed quickly and followed instructions given. Grammar, spelling, etc. was all good as well. Thank you so much! Will hire in the future.
1. The following problems will use a monthly data (not seasonally adjusted) on total clothing sales in the United States from January 1992 to December 2012. This data can be found from United States Census Bureau survey of “Monthly Retail Trade and Food Services” (category 4481).
2. We want to check if there is a break in the trend around the infamous Lehman Brothers crash in September 2008. Construct a dummy variable (D) that takes zeros before September 2008 and ones after that. Also, generate t×D, the interactive dummy variable, constructed as t ∗ D. Choose the model that you picked in the previous question and add the trend dummy variable (D) and the interaction term (txD). All regressions are estimated over the sample period from January 1992 through December 2012 under the assumption of homoskedasticity.
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