f(x,y) y 0 250 500 x 200 0.20 0.10 0.20 500 0.05 0.15 0.30 The marginal mass function of x is x 200 500 f ( x ) 0.5 0.5 The marginal mass function of y is y 0 250 500 f ( y ) 0.25 0.25 0.5 Refer to...

f(x,y)	y
	0	250	500
x	200	0.20	0.10	0.20
	500	0.05	0.15	0.30

The marginal mass function ofx is

x	200	500
f ( x )	0.5	0.5

The marginal mass function of y is

y	0	250	500
f ( y )	0.25	0.25	0.5

Extracted text: Refer to Exercise 42. Compute the covariance between x and y and then the value of the popu- lation correlation coefficient. Do these two vari- ables appear to be strongly related? Explain.


Extracted text: 42. A large insurance agency provides services to a number of customers who have purchased both a homeowner's policy and an automobile policy. For each type of policy, a deductible amount must be specified. Let x denote the homeowner's deductible amount and y denote the automobile deductible amount for a customer who has both types of poli- cies. The joint mass function of x and y is as follows: y auto f(x, y) 250 500 200 .20 .10 .20 me 500 .05 .15 30