If X X X3 and X4 are pairwise uncorrelated random variables each having mean 1 and variance 1 compute the correlations of a X X

Question

If X X X3 and X4 are pairwise uncorrelated random variables each having mean 1 and variance 1 compute the correlations of a X X and X X3 b X X and X3 X4 a p X X X X3 Type an exact answer in simplified form

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