Question

One way to design a spam filter to look at the words in an email. In
particular, some words are more frequent in spam emails. Suppose that
we have the following information: 50% of emails are spam; 1% of spam
emails contain the word “loan” and 0.001% non spam emails contain the
word “loan”. Suppose that an email is checked and found to contain the
word “loan”. What is the probability that the email is spam?​

Answer 1

Answer:

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