Answered: Calculate E(x), expectation of X b)…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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- Nike, Adidas, Puma and Reebok posted a “senior designer” job position online. Alice had interviews with all those four companies. She believes there is 10% chance that she never gets any job offer from those companies, while there is 39% chance she gets job offer from only 1 company, and there is 26% chance that she gets 2 job offers, there is 15% chance she gets 3 job offers and finally there is 10% chance that she gets 4 job offers (all 4 companies accept her).

Let’s random variable X represent the number of job offers that Alice that could get {0,1,2,3,4}.

a) Calculate E(x), expectation of X
b) Calculate V(X) the variance of X

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