If two random samples of sizes n 1 and n 2 are selected independently from two non-normally distributed populations,then the sampling distribution of the sample mean difference, 1 and n 2 are selected independently from two non-normally distributed populations,then the sampling distribution of the sample mean difference, ,is A) always non-normal B) always normal C) approximately normal only if n 1 and n 2 are both larger than or equal to 30 D) approximately normal regardless of n 1 and n 2 class=answers-bank-image d-inline rel=preload ,isA) always non-normalB) always normalC) approximately normal only if n 1 and n 2 are both larger than or equal to 30D) approximately normal regardless of n 1 and n 2

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If two random samples of sizes n 1  and n 2  are selected independently from two non-normally distributed populations,then the sampling distribution of the sample mean difference,  1  and n 2  are selected independently from two non-normally distributed populations,then the sampling distribution of the sample mean difference,   ,is A) always non-normal B) always normal C) approximately normal only if n 1  and n 2  are both larger than or equal to 30 D) approximately normal regardless of n 1  and n 2  class=answers-bank-image d-inline rel=preload > ,isA) always non-normalB) always normalC) approximately normal only if n 1  and n 2  are both larger than or equal to 30D) approximately normal regardless of n 1  and n 2

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