What affects 4K Ultra HD Smart TV sales? TVs are sold through a variety of outlets such as large electronics stores, department stores, large discount chains and online. 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. Below are the multiple regression results. a. Write out the estimated regression equation.
b. Is the regression equation significant overall? Explain.
c. How much of the variability in Sales is explained by the regression equation?
d. State the hypotheses for testing the regression coefficient of Price. Based on the results, what do you conclude at α = .05?
e. State the hypotheses for testing the regression coefficient of Advertising Expenditure. Based on the results, what do you conclude at α = .05?
f. Predict the sales for a store that sells the Samsung 7 Series for $2199 and spends 10% of its advertising budget on the product.
g. Comment on whether the conditions for multiple regression are satisfied based on the plots shown below.

Question

What affects 4K Ultra HD Smart TV sales? TVs are sold through a variety of outlets such as large electronics stores, department stores, large discount chains and online. 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. Below are the multiple regression results.  a. Write out the estimated regression equation.
b. Is the regression equation significant overall? Explain.
c. How much of the variability in Sales is explained by the regression equation?
d. State the hypotheses for testing the regression coefficient of Price. Based on the results, what do you conclude at α = .05?
e. State the hypotheses for testing the regression coefficient of Advertising Expenditure. Based on the results, what do you conclude at α = .05?
f. Predict the sales for a store that sells the Samsung 7 Series for $2199 and spends 10% of its advertising budget on the product.
g. Comment on whether the conditions for multiple regression are satisfied based on the plots shown below.

Quizplus · Accepted Answer

The Answer of What affects 4K Ultra HD Smart TV sales? TVs are sold through a variety of outlets such as large electronics stores, department stores, large discount chains and online. 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. Below are the multiple regression results.  a. Write out the estimated regression equation.
b. Is the regression equation significant overall? Explain.
c. How much of the variability in Sales is explained by the regression equation?
d. State the hypotheses for testing the regression coefficient of Price. Based on the results, what do you conclude at α = .05?
e. State the hypotheses for testing the regression coefficient of Advertising Expenditure. Based on the results, what do you conclude at α = .05?
f. Predict the sales for a store that sells the Samsung 7 Series for $2199 and spends 10% of its advertising budget on the product.
g. Comment on whether the conditions for multiple regression are satisfied based on the plots shown below.

What Affects 4K Ultra HD Smart TV Sales? TVs Are