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If two variates Xa n dY are connected by...

If two variates `Xa n dY` are connected by the relation `Y=(a X+b)/c ,w h e r ea ,b ,c` are constants such that `a c<0,t h e n` (a) `sigma_gamma=a/csigma_X` (b) `sigma_gamma=-a/csigma_X` (c) `sigma_gamma=a/csigma_X+b` (d) none of these

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