6. In the paper manufacturing process, too much moisture left in the paper causes streaks that renders the paper unusable. Streaks can be avoided, for example, by slowing down the machine, over drying the paper, calibrating the dryer head, and so on. The following coded data give the amount of moisture in the paper and the number of streaks per 100 linear feet:

Moisture, X: 8 11 14 9 10 13 12 7 Number of streaks, Y: 5 14 22 16 17 8 19 10

(a) Construct a scatter plot for these data. Does the scatter plot indicate that a straight-line would provide a good fit?

(b) Fit a regression line to these data for predicting the number of streaks.

(c) Using (b), record the least-squares estimates of the regression coefficients.