1. To help determine how many beers to stock the concession manager at Yankee Stadium wanted to know how the temperature affected beer sales. Accordingly, she took a sample of 10 games and recorded the number of beers sold and the temperature in the middle of the game.

Temperature Number of beers

80 20533

68 1439

78 13829

79 21286

87 30985

74 17187

86 30240

92 37596

77 9610

84 28742

a. Compute the coefficients of the regression line.

b. Interpret the coefficients