Three people are invited to participate a seminar. Assume all three people arrives independently, and the probability of any one of them is late is 0.2. Let X be the number of late participants of the seminar. 1 . Find the distribution (pmf) of X. 2 . Calculate mean and variance of ✗.

Three people are invited to participate a seminar. Assume all three people arrives independently, and the probability of any one of them is late is 0.2. Let X be the number of late participants of the seminar. 1 . Find the distribution (pmf) of X. 2 . Calculate mean and variance of ✗.

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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Question

Three people are invited to participate a seminar. Assume all three people arrives independently, and the probability of
any one of them is late is 0.2. Let X be the number of late participants of the seminar.
1
. Find the distribution (pmf) of X.
2
. Calculate mean and variance of ✗.

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