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Mathematics, 04.12.2019 04:31, EmiHope
The pew research center surveyed adults who own/use the following technologies: internet, smartphone, email, and land-line phone (usa today, march 26, 2014) and asked which of these technologies would be "very hard" to give up. the following responses were obtained: internet 53%, smartphone 49%, email 36%, and land-line phone 28%. a. if 20 adult internet users are surveyed, what is the probability that 3 users will report that it would be very hard to give it up ? b. if 20 adults who own a land-line phone are surveyed, what is the probability that 5 or fewer will report that it would be very hard to give it up ?
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Answers: 3
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