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Probability

Having some difficulty with this question, would like some help:

Let X1 and X2 be independent random variables. X1 has expectation 3 and variance 1. X2 has expectation 1 and variance 2. How do I find the prob. that both X1 and X2 will be greater than 2?

Thanks
Reply 1
Original post by SS__
Having some difficulty with this question, would like some help:

Let X1 and X2 be independent random variables. X1 has expectation 3 and variance 1. X2 has expectation 1 and variance 2. How do I find the prob. that both X1 and X2 will be greater than 2?

Thanks

Independent means you'll multiply the individual probabilities to get the joint.
Reply 2
Original post by mqb2766
Independent means you'll multiply the individual probabilities to get the joint.

So would I just find P(X>2) for both X1 and X2 and multiply together?
Reply 3
Original post by SS__
So would I just find P(X>2) for both X1 and X2 and multiply together?


Yes

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