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?
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.4: Collecting Data
Problem 3E
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