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Problems 12. The joint density of X and Y is given by (6+x)-* otherwise f(x,y) 3D (a) Compute the density of X. (b) Compute the density of Y. (c) Are X and Y independent? 13. The joint density of X and Y is f(x,y) = 0 otherwise (a) Compute the density of X. (b) Compute the density of Y. (c) Are X and Y independent? 14. If the joint density function of X and Y factors into one part depending only on x and one depending only on y, show that X and Y are independent. That is, if show that X and Y are independent. 15. Is Problem 14 consistent with the results of Problems 12 and 13? 16. Suppose that X and Y are independent continuous random variables. Show that (a) PIX+Ys a) = 4Oy(->>-J (b) PLX S Y} p (6)YOL = where fy is the density function of Y, and Fx is the distribution functi 17. When a current / (measured in amperes) flows through a resistance R (meas in ohms), the power generated (measured in watts) is given by W R. Sup that / and R are independent random variables with densities 15850 (X-1Da9 (x)4 Ex50 %3D(x)Y Determine the density function of W.

Problems 12. The joint density of X and Y is given by (6+x)-* otherwise f(x,y) 3D (a) Compute the density of X. (b) Compute the density of Y. (c) Are X and Y independent? 13. The joint density of X and Y is f(x,y) = 0 otherwise (a) Compute the density of X. (b) Compute the density of Y. (c) Are X and Y independent? 14. If the joint density function of X and Y factors into one part depending only on x and one depending only on y, show that X and Y are independent. That is, if show that X and Y are independent. 15. Is Problem 14 consistent with the results of Problems 12 and 13? 16. Suppose that X and Y are independent continuous random variables. Show that (a) PIX+Ys a) = 4Oy(->>-J (b) PLX S Y} p (6)YOL = where fy is the density function of Y, and Fx is the distribution functi 17. When a current / (measured in amperes) flows through a resistance R (meas in ohms), the power generated (measured in watts) is given by W R. Sup that / and R are independent random variables with densities 15850 (X-1Da9 (x)4 Ex50 %3D(x)Y Determine the density function of W.

Functions and Change: A Modeling Approach to College Algebra (MindTap Course List)
Functions and Change: A Modeling Approach to College Algebra (MindTap Course List)
6th Edition
ISBN:9781337111348
Author:Bruce Crauder, Benny Evans, Alan Noell
Publisher:Bruce Crauder, Benny Evans, Alan Noell
ChapterA: Appendix
SectionA.2: Geometric Constructions
Problem 9P: A soda can is made from 40 square inches of aluminum. Let x denote the radius of the top of the can,...
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Problems 12. The joint density of X and Y is given by (6+x)-* otherwise f(x,y) 3D (a) Compute the density of X. (b) Compute the density of Y. (c) Are X and Y independent? 13. The joint density of X and Y is f(x,y) = 0 otherwise (a) Compute the density of X. (b) Compute the density of Y. (c) Are X and Y independent? 14. If the joint density function of X and Y factors into one part depending only on x and one depending only on y, show that X and Y are independent. That is, if show that X and Y are independent. 15. Is Problem 14 consistent with the results of Problems 12 and 13? 16. Suppose that X and Y are independent continuous random variables. Show that (a) PIX+Ys a) = 4Oy(->>-J (b) PLX S Y} p (6)YOL = where fy is the density function of Y, and Fx is the distribution functi 17. When a current / (measured in amperes) flows through a resistance R (meas in ohms), the power generated (measured in watts) is given by W R. Sup that / and R are independent random variables with densities 15850 (X-1Da9 (x)4 Ex50 %3D(x)Y Determine the density function of W.
Transcribed Image Text:Problems 12. The joint density of X and Y is given by (6+x)-* otherwise f(x,y) 3D (a) Compute the density of X. (b) Compute the density of Y. (c) Are X and Y independent? 13. The joint density of X and Y is f(x,y) = 0 otherwise (a) Compute the density of X. (b) Compute the density of Y. (c) Are X and Y independent? 14. If the joint density function of X and Y factors into one part depending only on x and one depending only on y, show that X and Y are independent. That is, if show that X and Y are independent. 15. Is Problem 14 consistent with the results of Problems 12 and 13? 16. Suppose that X and Y are independent continuous random variables. Show that (a) PIX+Ys a) = 4Oy(->>-J (b) PLX S Y} p (6)YOL = where fy is the density function of Y, and Fx is the distribution functi 17. When a current / (measured in amperes) flows through a resistance R (meas in ohms), the power generated (measured in watts) is given by W R. Sup that / and R are independent random variables with densities 15850 (X-1Da9 (x)4 Ex50 %3D(x)Y Determine the density function of W.
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