If a gambler rolls two dice amd gets the sum of 5 he wins $30. if he gets a sum of 3 he wins $50. the cost of playing is $15. what is the expectation of this game? a. $0.83 b. -$3.89 c. -$8.89 d. -$12.50

Use a calculator to verify that σ(x) = 62, σ(x2) = 1034, σ(y) = 644, σ(y2) = 93,438, and σ(x y) = 9,622. compute r. (enter a number. round your answer to three decimal places.) as x increases from 3 to 22 months, 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, we can not draw any conclusions for the behavior of y as x increases. given our value of r, y should tend to remain constant as x increases. given our value of r, y should tend to decrease as x increases.