The museum of science in boston has an exhibit in which metal balls drop down a chute, bounce around, and wind up in one of 21 bins. after 1000 balls have dropped, the heights within the bins clearly follow a bell-shaped curve. if the standard deviation is 3 bins, approximately how many balls are in bins 1 through 7?

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.