A consumer analyst collected the following data on the screen sizes of popular LCD televisions sold recently at a large retailer:

a. Does there appear to be a linear relationship between the screen size and the price?
b. Which variable is the €œdependent€ variable?
c. Using statistical software, determine the regression equation. Interpret the value of the slope in the regression equation.
d. Include the manufacturer in a multiple linear regression analysis using a €œdummy€ variable. Does it appear that some manufacturers can command a premium price?
e. Test each of the individual coefficients to see if they are significant.
f. Make a plot of the residuals and comment on whether they appear to follow a normal distribution.
g. Plot the residuals versus the fitted values. Do they seem to have the same amount ofvariation?

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Manufacturer Screen Manufacture Screen 37 32 52 40 Samsun Samsun Samsun Samsun Samsun 52 40 52 46 52 4 Samsun