Asquare field has an area of 10 square miles. what is the approximate length, to the nearest thousandth, of one side of this field?
a.) 2.5 miles
b.) 3 miles
c.) 3.162 miles
d.) 3.612 miles

The discrete random variables x and y take integer values with joint probability distribution given by f (x,y) = a(y−x+1) 0 ≤ x ≤ y ≤ 2 or =0 otherwise, where a is a constant. 1 tabulate the distribution and show that a = 0.1.2 find the marginal distributions of x and y. 3 calculate cov(x,y).4 state, giving a reason, whether x and y are independent. 5 calculate e(y|x = 1).