An architect uses a scale of 1 inch equal to 3 feet. the actual porch is being built is 8 feet by 20 feet.
what are the porch’s dimensions in the architect’s drawing?
a. 24 inches by 60 inches
b. 11 inches by 23 inches
c.2 2/3 inches by 6 2/3 inches
d. 2 1/3 inches by 6 1/3 inches

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).