20. Consider the following probability distribution function for a discrete random variable X:2 5 100.4 0.2(a) What is P(X <8)?1P(X) 0.3(b) What is the expected value of X?(c) What is the variance of X?0.1

X 1 2 5 10 P(X) 0.3 0.1 0.4 0.2

Answered: 20. Consider the following probability…

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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20. Consider the following probability distribution function for a discrete random variable X: 1 2 5 10 0.1 0.4 0.2 (a) What is P(X <8)? X P(X) 0.3 (b) What is the expected value of X? (c) What is the variance of X?