30 points DISTANCE The graph represents the number of hours since Afshan left
work and her distance from home.
a. ldentify the independent and dependent variables of
the relations
Distance from
Home (miles)
Hours
b. Describe what happens in the graph
EOS

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).