It was hypothesized that the number of bottles of an imported premium beer sold per evening in the restaurants of a city depends linearly on the average costs of meals in the restaurants. The following results were obtained for a sample of n = 17 restaurants of approximately equal size where
y = number of bottles sold per evening
x = average cost, in dollars, of a meal

a. Find the sample regression line.
b. Interpret the slope of the sample regression line.
c. Is it possible to provide a meaningful interpretation of the constant in the sample regression at the end with equation? Explain.

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Σ(xi-T)2 x = 25.5 y= 16.0 =350 Σ(x,-ア)(yi-y) = 180