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# What affects 4K Ultra HD Smart TV sales?

What affects 4K Ultra HD Smart TV sales? TVs are sold through a variety of outlets. Sales figures (number of units) for the Samsung 7 Series were obtained for last quarter from a sample of 30 different stores. Also collected were data on the selling price and amount spent on advertising the Samsung 7 Series (as a percentage of total advertising expenditure in the previous quarter) at each store. Above are the results. Using the estimated multiple regression model, the number of units sold on average at a store that sells the Samsung 7 Series for $2199 and spends 10% of its advertising budget on the product is