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How to read this symbol \(\Large P(E|F)\)

that is not fraction

i think that's the Probability of F given that the event E has occurred. Conditional probability

P of E such that F

this is related to this https://en.wikipedia.org/wiki/Conditional_probability

|=such that

- or have i got it the wrong way around??

i think u told the opposite

yes

it can be read as P of E such that of F

yes probability of E given F

oops those P's should be A's lol

lol

nice work man! :)

now that you know what \(P(A|B)\) means, see if you can solve below problem
|dw:1439733513721:dw|

i just started learning it . can't solve

you're given that the person is 70 or older, so "only look at that column" :
|dw:1439734227337:dw|

how many are 70 or older ?
how many of them are men ?

70 old > 50 persons

there are 25 people that are 70 or older right ?

yes 25