The random variables Y1 and Y2, for −1 ≤ α ≤ 1, have a joint density function given by f(y1, y2) = [1 − α{(1 − 2e−y1)(1 − 2e−y2)}]e−y1 − y2, 0 ≤ y1, 0 ≤ y2, 0, elsewhere, and established that the marginal distributions of Y1 and Y2 are both exponential with mean 1. (a) Find E(Y1) and E(Y2). E(Y1) = E(Y2) = (b) Find V(Y1) and V(Y2). V(Y1) = V(Y2) =

With this question! what is process of elimination? ? p.s. my brothers acc got banned so add his new one @ yamauchiyamyam17

Solve 2x2 + 8 = 0 by graphing the related function. there are two solutions: . there are no real number solutions. there are two solutions: 2 and -2

The table below represents the displacement of a fish from its reef as a function of time: time (hours) x displacement from reef (feet) y 0 4 1 64 2 124 3 184 4 244 part a: what is the y-intercept of the function, and what does this tell you about the fish? (4 points) part b: calculate the average rate of change of the function represented by the table between x = 1 to x = 3 hours, and tell what the average rate represents. (4 points) part c: what would be the domain of the function if the fish continued to swim at this rate until it traveled 724 feet from the reef? (2 points)