Find E(X) = Find Var(2X + 100 - 24) = What is the probability that a child in Sweden can speak three or more languages? What is the probability that a child in Sweden can speak three or more languages but speak less than six languages? Let the random variable X to be the number of languages a randomly chosen child canhold an everyday conversation in Sweden. Suppose that we take a random sample of1000 school children in Sweden and obtain the following data for the number of languagesspoken.123456 TotalFrequency 663 226 66 22 19 41000

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Find E(X) = Find Var(2X + 100 - 24) = What is the probability that a child in Sweden can speak three or more languages? What is the probability that a child in Sweden can speak three or more languages but speak less than six languages?

Find E(X) = Find Var(2X + 100 - 24) = What is the probability that a child in Sweden can speak three or more languages? What is the probability that a child in Sweden can speak three or more languages but speak less than six languages?

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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Question

Find E(X) =

Find Var(2X + 100 - 24) =

What is the probability that a child in Sweden can speak three or more languages?

What is the probability that a child in Sweden can speak three or more languages but speak less than six languages?

Let the random variable X to be the number of languages a randomly chosen child can
hold an everyday conversation in Sweden. Suppose that we take a random sample of
1000 school children in Sweden and obtain the following data for the number of languages
spoken.
1
2
3
4
5
6 Total
Frequency 663 226 66 22 19 4
1000

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