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Question

Alan Bissell, a market analyst for City Sound Online Mart, is analyzing sales from heavy metal song downloads. Alan's dependent variable is annual heavy metal song download sales (in $1,000,000's), and his independent variables are website visitors (in 1,000's) and type of download format requested (0 = MP3, 1 = other). Regression analysis of the data yielded the following tables.

 Coefficients Standard Error t Statistic p-value
Intercept 1.7 0.384212 4.424638 0.00166
x1(website visitors) 0.04 0.014029 2.851146 0.019054
x2(download format) -1.5666667 0.20518 -7.63558 3.21E-05

For the same number of website visitors, what is difference between the predicted sales for MP3 versus "˜other" heavy metal song downloads
a) $1,566,666 higher sales for "˜other" formats
b) the same sales for both formats
c) $1,566,666 lower sales for the "˜other" format
d) $1,700,000 higher sales for the MP3 format
e) $ 1,700,000 lower sales for the "˜other" format

Answer

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