When is a permutation test valid? You want to test the
Chapter , Problem 16.69(choose chapter or problem)
When is a permutation test valid? You want to test the equality of the means of two populations. Sketch density curves for two populations for which (a) a permutation test is valid but a t test is not. (b) both permutation and t tests are valid. (c) a t test is valid but a permutation test is not.
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