Let (X1, Y1),(X2, Y2),...,(Xn, Yn) be a random sample from a bivariate normal distribution with μ1, μ2, σ21= σ22= σ2, ρ = , where μ1, μ2, and σ2> 0 are unknown real numbers. Find the likelihood ratio Λ for testing H0: μ1= μ2= 0, σ2unknown against all alternatives. The likelihood ratio Λ is a function of what statistic that has a well-known distribution?
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