What is the ratio of individuals for whom the ra

Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter7: Applying Fractions
Section7.1: Ratios
Problem 25WE
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2

Excrcisel
Main source of information
Age
Radio
Television
Newspapers
Internet
Less than 30 years
Between 30 and 50 years
More than 50 years
30
30
20
45
20
40
10
25
30
40
1-
What is the ratio of individuals for whom the radio is the main source of information?
2- What is the ratio of individuals under 30 years?
3- What is the ratio of individuals under 30 years for whom the radio is the main source of information?
4. Can we conclude that the "main source of information" and the "age" are independent?
Transcribed Image Text:Excrcisel Main source of information Age Radio Television Newspapers Internet Less than 30 years Between 30 and 50 years More than 50 years 30 30 20 45 20 40 10 25 30 40 1- What is the ratio of individuals for whom the radio is the main source of information? 2- What is the ratio of individuals under 30 years? 3- What is the ratio of individuals under 30 years for whom the radio is the main source of information? 4. Can we conclude that the "main source of information" and the "age" are independent?
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