How much noisier are streets where cars travel faster? The following table presents noise levels in decibels and average speed in kilometers per hour for a sample of roads. Round to 4 decimal places.

Speed	Noise
28.26	78.1
36.22	86.2
38.73	89.5
29.09	77.5
32.13	83.9
30.28	80.6
32.56	84.1
27.14	75.2
29.1	80.3
33.17	82.9

A. What is the correlation coefficient of the above data? (3 points)

B. Find the regression line based on the above data. (4 points)

C. Predict the noise if the speed equals 33.05 km/hr. (3 points)

D. Can we do a predication for a speed of 60km/hr? Why or why not? (2 points)

E. If the speed was to change by 3.5, what would the change in noise be? (2 points)

F. What is the y intercept? Interpret the y intercept in context. (2 points)