7. Let X be a random variable with the following probability distribution:22/9131/27хP(X = x)8/274/9Find the mean, variance and standard deviation of x. 8. By investing in a particular stock, a person can make a profit in 1 yearof with probability 0.4 or take a loss of P1000 with probability 0.7.What is this person's expected gain?

Answered: 7. Let X be a random variable with the…

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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7. Let X be a random variable with the following probability distribution: 1 4/9 3 1/27 P(X = x) 8/27 2/9 Find the mean, variance and standard deviation of x.