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2. Suppose that X is a uniform random (a) Explain why Y = 1/X is a random variable. Hint: Your answer should involve the definition of "random va given in class, and the function g(x) = 1/x. donsity function fy (y) of Y.

2. Suppose that X is a uniform random (a) Explain why Y = 1/X is a random variable. Hint: Your answer should involve the definition of "random va given in class, and the function g(x) = 1/x. donsity function fy (y) of Y.

A First Course in Probability (10th Edition)
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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1. Suppose that P(@) is a probability distribution on a discrete sample spac Let BC be an event with P(B) > 0. Show that oB(@) = P(@)/P(B) probability distribution on B. %3D 2. Suppose that X is a uniform random variable on 0,1]. (a) Explain why Y = 1/X is a random variable. Hint: Your answer should involve the definition of "random variab given in class, and the function g(x) = 1/x. (b) Find the probability density function fy (y) of Y. Note: Be sure to specify the value of fY y) for every y ER. 3. Select two uniformly random points A, B in the unit interval [0, 1]. Then "cu the interval [O, 1] at the points A and B to form three separate lines, of lengt m, M -m and 1-M, where m = min{A, B} and M = max{A, B}. Show th with probability 1/4, the three lines can form a triangle. [- Hint 1: If any of the lines is longer than 1/2, it will not be possible (as th other two will not be able to "reach"). Otherwise, a trianglejcan be formec ifu this event with a certain subset of the unit square (0, 1.
Transcribed Image Text:1. Suppose that P(@) is a probability distribution on a discrete sample spac Let BC be an event with P(B) > 0. Show that oB(@) = P(@)/P(B) probability distribution on B. %3D 2. Suppose that X is a uniform random variable on 0,1]. (a) Explain why Y = 1/X is a random variable. Hint: Your answer should involve the definition of "random variab given in class, and the function g(x) = 1/x. (b) Find the probability density function fy (y) of Y. Note: Be sure to specify the value of fY y) for every y ER. 3. Select two uniformly random points A, B in the unit interval [0, 1]. Then "cu the interval [O, 1] at the points A and B to form three separate lines, of lengt m, M -m and 1-M, where m = min{A, B} and M = max{A, B}. Show th with probability 1/4, the three lines can form a triangle. [- Hint 1: If any of the lines is longer than 1/2, it will not be possible (as th other two will not be able to "reach"). Otherwise, a trianglejcan be formec ifu this event with a certain subset of the unit square (0, 1.
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