The life lengths of two transistors in an electronic circuit is a random vector (X; Y ) where X is the life length of transistor 1 and Y is the life length of transistor 2. The joint probability density function of (X; Y ) is given by fx.y(x,y) = } 2e-*+2) x20, y20 else Then the probability that the first transistor burned during the first hour and a half given that the second one lasts at least half hour equals Select one: a. 0.3669 b. 0.7772 c. 0.3935 d. 0.606 e. 0.6318

The life lengths of two transistors in an electronic circuit is a random vector (X; Y ) where X is the life length of transistor 1 and Y is the life length of transistor 2. The joint probability density function of (X; Y ) is given by fx.y(x,y) = } 2e-*+2) x20, y20 else Then the probability that the first transistor burned during the first hour and a half given that the second one lasts at least half hour equals Select one: a. 0.3669 b. 0.7772 c. 0.3935 d. 0.606 e. 0.6318

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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