SOLUTION: the results of a survey of people`s main source of news are shown below. There are 200 respondents between ages of 36 to 50 years and 200 respondents who where over age 50. of the

Algebra.Com
Question 898815: the results of a survey of people`s main source of news are shown below. There are 200 respondents between ages of 36 to 50 years and 200 respondents who where over age 50. of the 200 respondents who were between the ages of 36 and 50, 71 got their news primarily from newspapers. of the 200 respondents who were over age 50, 142 got their news primarily from newspapers.
1. what is the probability that an individual respondent got news primarily from newspapers?
2. what is the probability that an individual respondent got news primarily from newspapers and is over 50 years old?
3.given that a respondent gets news primarily from newspapers, what is the probability that he or she is over age 50?
Answer by ewatrrr(24785)   (Show Source): You can put this solution on YOUR website!
 

Hi

p(>50) = 142/200

p(36-50) = 71/200

1. P(one 0r the other) = (142 + 71)/400 = 213/400

2. P(NP and >50) = 



P(A|B) = P(A and B)/P(B)

3. P(>50|NP) =   

RELATED QUESTIONS


A study conducted on​ people's main source of news was based on 250 respondents between  (answered by math_tutor2020)

Where people turn to for news is different for various age groups.Suppose that a study... (answered by Theo)

Gaynor Advertising conducted a survey to determine individual’s main source of news as... (answered by GingerAle)

A CBS News poll conducted June 10 and 11, 2006, among a nationwide random sample of 651... (answered by Boreal)

4.HU Entrepreneurship and Business Incubation Centers surveyed a random sample of 1000... (answered by ikleyn)

A sample of 200 people was assumed to identify their major source of news information;... (answered by Theo)

Among survey respondents who thought the economy was about the same, what percent were... (answered by ikleyn)

The results of a survey of the news gathering habits of adults age 18-29 are displayed in  (answered by Boreal)

A survey was conducted about people’s favorite types of books.  The results came in as... (answered by richwmiller)