8. (11 points) As fallen trees lie on the forest oor they slowly decay. Will the amount of light present have an impact on the rate of decay? In the following table x is a random variable representing the remaining percentage of total mass of a log after it was exposed to the elements for three weeks while y represents the number of hours the log went without direct sunlight each day. x .56 .46 .74 .92 .95 3* 22.8 21.9 19.1 19 17.8 (a) (7 points) Plot a scatter diagram of the data. Remember to label your axes appropriately and choose a consistent scale. (b) (2 points) Based on a scatter diagram, would you estimate the correlation coefcient to be positive, close to zero, or negative? Please circle one of the following choices