[R] r question

[Uwe Ligges]

Please,

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Uwe Ligges



yuying shi wrote:

> If there are two random variable X1 and X2 which have
> a bivariate normal distribution with mean vector (10,
> 10)and variance covariance matrix 
> [2    1.95
>  1.95    3]
> 
> How to calculate the mean and variance of the function
> Y=X1/X2? 
> 
> Thanks a lot!
> xingyu
> 
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