(b) Use a calculator to verify that E(x) = 154.6, E(x2) = 3418.78, E(y) = 248, E(y2) = 10230 and E(x y) = 5607.7. Computer. (Enter a number. Round to 3 decimal places.) As x increases, does the value of r imply that y should tend to increase or decrease? Explain your answer. Given our value of r, y should tend to increase as x increases. Given our value of r, y should tend to remain constant as x increases. Given our value of r, we can not draw any conclusions for the behavior of y as x increases. Given our value of r, y should tend to decrease as x increases. Need