The amounts of 6 restaurant bills and the corresponding amounts of the tips are given in the below. Assume that bill amount is the explanatory variable and tip amount the response variable.

Bill| 52.44 64.30 106.27 43.58 49.72 97.34

Tip| 7.00 7.70 16.00 5.50 5.28 16.00

(a) Find the correlation: r=

equation editor

(b) Does there appear to be a significant correlation? A. Yes B. No

(c) The regression equation is y^=

equation editor

.

(d) If the amount of the bill is $55, the best prediction for the amount of the tip is $

equation editor

. Note: Enter your answer as a number xx.xx

(e) According to the regression equation, for every $5 increase in the bill, the tip should

equation editor

(Enter INCREASE or DECREASE) by $