Answer: In Exercise 5.18, Y1 and Y2 denoted the lengths of life, in hundreds of hours
Chapter 5, Problem 5.81(choose chapter or problem)
In Exercise 5.18, Y1 and Y2 denoted the lengths of life, in hundreds of hours, for components of types I and II, respectively, in an electronic system. The joint density of Y1 and Y2 is f (y1, y2) = (1/8)y1e(y1+y2)/2, y1 > 0, y2 > 0, 0, elsewhere. One way to measure the relative efficiency of the two components is to compute the ratio Y2/Y1. Find E(Y2/Y1). [Hint: In Exercise 5.61, we proved that Y1 and Y2 are independent.]
Unfortunately, we don't have that question answered yet. But you can get it answered in just 5 hours by Logging in or Becoming a subscriber.
Becoming a subscriber
Or look for another answer