The seismic activity density of a region is the ratio of the number of earthquakes during a given time span to the land area affected. a state had 424 earthquakes over a given time span and a land area of 71,300 square miles. what is the seismic activity density for this state? round to the nearest ten thousandth, if necessary. earthquake(s) per square mile

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.