The owner of a chain of fruit shakes stores would like to study the correlation between atmospheric temperature and sales during the summer season. A random sample of 12 days is selected with the results given below:

Day 1 2 3 4 5 6 7 8 9 10 11 12

Temp (F) 79 76 78 84 90 83 93 94 97 85 88 82

Total Sales 147 143 147 168 206 155 192 211 209 187 200 150

1. Determine the regression equation, plot the regression line and interpret it.
2. Find for the sum of squares for error, standard error, coefficient of determination.
3. Determine the sales of fruit shakes if the temperature is 95 degrees Fahrenheit.