A farmer is planning to fence and fertilize a rectangular plot. Let X and Y represents the width and length for the plot respectively and suppose that the fence he has in total of 20. He wants to at least have all the sides fenced, but don't need to use all the fences. He also found that this is a very irregular plot, the fertilizer needed by a certain area follows this joint density function of X and Y: f(x, y) = { 500,0< x, y elsewhere a) Find the probability that the required fence for the plot is no longer than 10 b) Find the marginal density for X c) Find the probability that the length Y is less than 1 if it is known that X is 8

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 10P: A soda can has a volume of 25 cubic inches. Let x denote its radius and h its height, both in...
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A farmer is planning to fence and fertilize a rectangular plot. Let X and Y
represents the width and length for the plot respectively and suppose that the
fence he has in total of 20.
He wants to at least have all the sides fenced, but don't need to use all the
fences.
He also found that this is a very irregular plot, the fertilizer needed by a certain
area follows this joint density function of X and Y:
f(x, y) = {
x²y₁0 < x, y
500,
0, elsewhere
a) Find the probability that the required fence for the plot is no longer than 10
b) Find the marginal density for X
c) Find the probability that the length Y is less than 1 if it is known that X is 8
Transcribed Image Text:A farmer is planning to fence and fertilize a rectangular plot. Let X and Y represents the width and length for the plot respectively and suppose that the fence he has in total of 20. He wants to at least have all the sides fenced, but don't need to use all the fences. He also found that this is a very irregular plot, the fertilizer needed by a certain area follows this joint density function of X and Y: f(x, y) = { x²y₁0 < x, y 500, 0, elsewhere a) Find the probability that the required fence for the plot is no longer than 10 b) Find the marginal density for X c) Find the probability that the length Y is less than 1 if it is known that X is 8
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