It was hypothesized that the number of bottles of craft 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

Compute a 95% prediction interval and a 95% confidence interval for the number of bottles of beer sold when the average cost of a meal is $27.

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= x=25.5 y 16.0 n i=1 (3) - 7)2 i=1 n-1 (xx)(yi) - n-1 (yi - y) n-1 = 180 = 250 350