An advertising agency in a large city is conducting a survey of adults to investigate whether there is an association between highest level of educational achievement and primary source for news. The company takes a random sample of 2,500 adults in the city. The results are shown in the table below. HIGHEST LEVEL OF EDUCATIONAL ACHIEVEMENT Not High School Graduate High School Graduate But Not College Primary Source for News College Graduate Total Graduate Newspapers Local television Cable television Internet None Total 49 205 170 188 442 90 113 41 77 335 756 687 75 496 401 147 245 165 38 280 370 1437 693 2,500 Enter each probability in decimal form, rounded to three decimal places. If an adult is to be selected at random from this sample, what is the probability that the selected adult is a college graduate? If an adult is to be selected at random from this sample, what is the probability that the selected adult obtains news primarily from the internet? If an adult is to be selected at random from this sample, what is the probability that the selected adult is a college graduate and obtains news primarily from the internet? What is the probability that an adult obtains news primarily from newspapers given that he/she is a high school graduate?
An advertising agency in a large city is conducting a survey of adults to investigate whether there is an association between highest level of educational achievement and primary source for news. The company takes a random sample of 2,500 adults in the city. The results are shown in the table below. HIGHEST LEVEL OF EDUCATIONAL ACHIEVEMENT Not High School Graduate High School Graduate But Not College Primary Source for News College Graduate Total Graduate Newspapers Local television Cable television Internet None Total 49 205 170 188 442 90 113 41 77 335 756 687 75 496 401 147 245 165 38 280 370 1437 693 2,500 Enter each probability in decimal form, rounded to three decimal places. If an adult is to be selected at random from this sample, what is the probability that the selected adult is a college graduate? If an adult is to be selected at random from this sample, what is the probability that the selected adult obtains news primarily from the internet? If an adult is to be selected at random from this sample, what is the probability that the selected adult is a college graduate and obtains news primarily from the internet? What is the probability that an adult obtains news primarily from newspapers given that he/she is a high school graduate?
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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Transcribed Image Text:An advertising agency in a large city is conducting a survey of adults to investigate whether there is an association between highest level of educational achievement and primary source for
news. The company takes a random sample of 2,500 adults in the city. The results are shown in the table below.
HIGHEST LEVEL OF EDUCATIONAL ACHIEVEMENT
Not High
School
Graduate
49
High School Graduate
But Not College
Graduate
Primary Source
for News
College Graduate
Total
Newspapers
Local television
Cable television
Internet
None
Total
442
205
170
496
188
75
90
335
113
147
245
756
687
41
401
77
165
38
280
370
1437
693
2,500
Enter each probability in decimal form, rounded to three decimal places.
If an adult is to be selected at random from this sample, what is the probability that the selected adult is a college graduate?
If an adult is to be selected at random from this sample, what is the probability that the selected adult obtains news primarily from the internet?
If an adult is to be selected at random from this sample, what is the probability that the selected adult is a college graduate and obtains news primarily from the internet?
What is the probability that an adult obtains news primarily from newspapers given that he/she is a high school graduate?
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