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?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 10CYU
icon
Related questions
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
Transcribed Image Text: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
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 4 steps with 2 images

Blurred answer
Recommended textbooks for you
Glencoe Algebra 1, Student Edition, 9780079039897…
Glencoe Algebra 1, Student Edition, 9780079039897…
Algebra
ISBN:
9780079039897
Author:
Carter
Publisher:
McGraw Hill
Holt Mcdougal Larson Pre-algebra: Student Edition…
Holt Mcdougal Larson Pre-algebra: Student Edition…
Algebra
ISBN:
9780547587776
Author:
HOLT MCDOUGAL
Publisher:
HOLT MCDOUGAL
College Algebra (MindTap Course List)
College Algebra (MindTap Course List)
Algebra
ISBN:
9781305652231
Author:
R. David Gustafson, Jeff Hughes
Publisher:
Cengage Learning
College Algebra
College Algebra
Algebra
ISBN:
9781938168383
Author:
Jay Abramson
Publisher:
OpenStax