I don't understand what the question is actually asking for. I've never seen the notation for what I'm being asked to find. Any help would be greatly appreciated.
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Perhaps it's asking for the expected value of X given that X>1.96. But I've never seen that notation either.
could it be some wierd notation for the identity function?
You can recognize this as the 97.5 percentile of the distribution, so the answer would be 0.025
It's the indicator function :
Why do you find it "weird" ?
And while talking probabilities, if A is an event,
So it's as SpringFan25 wrote, I'm just confirming it (I've already used this notation tons of times )
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