You are the manager of a firm that sells a leading brand of alkaline batteries. A file named Q12.xls with data on the demand for your product. Specifically, the file contains data on the natural logarithm of your quantity sold, price and the average income of consumers in various regions around world. Use this information to perform a log-linear regression, and then determine the likely impact of a 3 percent decline in global income on the overall demand for your product.
two file is textbook , two sources from text book, each book one sources
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