Question: 11. The two-sample test based on (12) is robust against heterogeneity of covariances as nl and n2 -> 00 when nl/n2 -> 1, but not

11. The two-sample test based on (12) is robust against heterogeneity of covariances as nl and n2 -> 00 when nl/n2 -> 1, but not in general.

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