The mean of the sampling distribution of the difference is equal to ______.
A) the population mean (μ)
B) 0
C) 1
D) the standard error of the difference

Question

The mean of the sampling distribution of the difference is equal to ______.
A) the population mean (μ) 
B) 0 
C) 1 
D) the standard error of the difference

Quizplus · Accepted Answer

The mean of the sampling distribution of the difference is equal to 0 because the expected value of the difference between two sample means is 0, assuming the samples are drawn from the same population with the same variance. This is known as the null hypothesis.

The Mean of the Sampling Distribution of the Difference Is