Ahmed recently caught Covid-19. He had contact to 7 persons. Let X be the number of persons he infected, a discrete random variable. Theprobability distribution of X is as follows:12347P(X)0.0790.2030.0790.1180.280.0210.010.21Find the following probabilities (in 3 decimal places):(a) What is the probability that he infected more than 3 persons?(b) What is the probability that he infected 8 persons?(c) What is the probability that he did not infect anybody?

Answered: Image /qna-images/answer/b632f721-b807-4d6d-9eb7-bdbd535bfb7c.jpg

Answered: Ahmed recently caught Covid-19. He had…

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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The joint probability distribution of two random variables X, Y is given in the table below. Y=-3 Y=2 Y=4 X=-4 0.02 0.14 0.13 X=-2 0.05 0.01 0.05 X=-1 0.09 0.00 0.11 X=1 0.12 0.15 0.07 X= 3 0.06 0.00 0.00 From the information in the table, calculate each of the following three probabilities. (a) P(Y> 2) = [ (b) P(X < 1,Y = 2) = | (c) P(Y< -3) = [] I Don't Know Submit O 2022 to search ALEKS - Britney Fri.
Groups of adults are randomly selected and arranged in groups of three. The random variable x is the number in the group who say that they would feel comfortable in a self-driving vehicle. Determine whether a probability distribution is given. If a probability distribution is given, find its mean and standard deviation. If a probability distribution is not given, identify the requirements that are not satisfied. X 0 1 2 3 B. No, the random variable x's number values are not associated with probabilities. C. No, the random variable x is categorical instead of numerical. D. No, not every probability is between 0 and 1 inclusive. E. No, the sum of all the probabilities is not equal to 1. A. μ = 0.9 adult(s) (Round to one decimal place as needed.) B. The table does not show a probability distribution. P(x) 0.363 0.447 0.167 0.023 Find the mean of the random variable x. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. 0= adult(s) (Round…
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Suppose we are interested in the relationship between an individual's brown hair and skin color. Based on a random sample of LIU students, we have the following joint probability distribution given by: X-degree of brown hair color 2 3 4 0.12 0.01 0.05 0.07 0.07 0.12 0.09 0.16 Y- degree of skin color 2 0.12 3 0.16 | 0.03 The probability that an individual with degree of brown hair 2 has a degree of skin color 1 is: None of these 0.263 0.167 0.3
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The joint probability distribution of two random variables X, Y is given in the table below. Y=-4 Y=0 Y=1_Y=4 X=-4 0.01 0.18 0.00 0.13 X=-1 0.03 0.08 0.20 0.14 X=4 0.00 0.08 0.09 0.06 From the information in the table, calculate each of the following three probabilities. (a) P(Y= -4) = | (b) Р (х < -1, ү 2 0) %3D0 (c) P(x< 5) = []

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