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:13457P(X)0.0790.2030.0790.1180.280.0210.010.21Find the following probabilities (in 3 decimal places):(d) What is the probability that he infected at least 1 person?(e) What is the expectation value of the number of persons infected by him?(f) What is the variance of the number of people infected by him?

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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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solve the following
Suppose x is a normally distributed random variable with u=16 and o=2. Find each of the following probabilities
The probabilities of all the values of a random variableX must: OA. average to a small and negative number. OB. add up to 1. OC. average to 0. D. none of the above,
A company has seven applicants for two positions: three women and four men. Suppose that the seven applicants are equally qualified and that no preference is given for choosing either gender. Let x equal the number of women chosen to fill the two positions. (a) Write the formula for p(x), the probability distribution of x. (b) What are the mean ? and variance ?2 of this distribution? (Round your mean to one decimal place and your variance to two decimal places.)
For families with 5 children, let XX be the number of children with Genetic Condition B. Can the following table be a probability distribution for the random variable XX? xx P(x)P(x) 1 0.2077 2 0.0943 3 0.3281 4 0.1105 5 0.3232 A. yes B. noIs it correct answer B?
solve the following
Asap. Just answer is also okay
For families with 5 children, let XX be the number of children with Genetic Condition B. Can the following table be a probability distribution for the random variable XX? xx P(x)P(x) 1 0.2486 2 0.347 3 0.182 4 0.0226 5 0.3492 yes no
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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) = []
Let X and Y be 2 random variables with joint probability distribution given in the following table: f(x,y) 1 3 0.3 0.2 Y 4 0.1 0.4 Then f(Y = 3|X = 0) is equal to: a. 0 b. 0.5 c. 0.75 d. 1

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