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# Probability: Jointly Distributed Random Variables watch

1. Question: Let be a number picked a random in . Given suppose that is a random variable such that is a number picked at random in . What is ?

I am really stuck on how to start this one. Well I know that the definition of conditional probability is this

but I am not sure how to define the joint probability , I think it will involve the uniform distribution?
2. (Original post by aspiring_doge)
Question: Let be a number picked a random in . Given suppose that is a random variable such that is a number picked at random in . What is ?

I am really stuck on how to start this one. Well I know that the definition of conditional probability is this

but I am not sure how to define the joint probability , I think it will involve the uniform distribution?
First of all, can you write down the conditional probability distribution of X given Y=y? Notice that it is a uniform distribution.

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