A Pew Internet Research study (April 2018) reported that 20% of US adults are now smartphone only

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A Pew Internet Research study (April 2018) reported that 20% of US adults are now “smartphone only” Internet users at home—that is, they own a smartphone but do not subscribe to traditional broadband service where they live. Of these “smartphone only” users, 10% have a college degree and 28% are between the ages of 18 and 29 years.

a. What is the probability that a US adult is a “smartphone only” user of the Internet and has a college degree?

b. What is the probability that a US adult is a “smartphone only” user of the Internet and between the age of 18 and 29 years?

c. The US Census Bureau reports that 33% of US adults have a college degree. For a randomly selected US adult, are the two events, A = {“smartphone only” user} and B = {have a college degree} independent?

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Statistics For Business And Economics

ISBN: 9780136855354

14th Edition

Authors: James T. McClave, P. George Benson, Terry T Sincich

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