Question
Out of a set of 1000 emails, 700 are spam. 400 of the emails have the word free; 300 of those are spam. 100 of
Out of a set of 1000 emails, 700 are spam. 400 of the emails have the word "free"; 300 of those are spam. 100 of the emails have the word "credit"; 90 of those are spam. You get an email that contains both "free" and "credit". What is the probability it is spam?
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Linear Algebra and Its Applications
Authors: Gilbert Strang
4th edition
30105678, 30105676, 978-0030105678
