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01.11.2019 •
Mathematics
Anational survey of bank customers finds that 55% are younger than 50. of those younger than 50, 3 of 7 conduct their banking online. of those older than 50, only 1 of 4 banks online. what is the probability that a person is younger than 50 given that she uses online banking? has the probability that she is younger than 50 increased or decreased with the additional information?
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Ответ:
(50 + 35) / 5 =
(50/5) + (35/5) =
10 + 7 = 17