The Expected Value of the Difference of Two Sample Means

question 141

Multiple Choice

The expected value of the difference of two sample means equals the difference of the corresponding population means when:

• A)the populations are normally distributed.
• B)the samples are independent.
• C)the populations are approximately normal and the sample sizes are large.
• D)All of these choices are true.

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Definitions:

Consistent

In statistics, refers to an estimator that, as the sample size grows to infinity, converges in probability to the true parameter being estimated.

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