If Two Samples Are Selected Independently from Two Non-Normal Populations $\bar { X } _ { 1 } - \bar { X } _ { 2 }$

question 75

True/False

If two samples are selected independently from two non-normal populations, then the sampling distribution of $\bar { X } _ { 1 } - \bar { X } _ { 2 }$ is only approximately normal provided that either n₁ or n₂ is 30 or more.

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