The sampling distribution of differences between means approximates a normal curve
Whose __________ is zero.
A)mode
B)median
C)mean
D)st andard deviation

Question

Quizplus · Accepted Answer

The mean of the sampling distribution of differences between means is zero when the null hypothesis assumes no difference between the population means. This is because the differences are centered around zero, indicating no systematic difference between the groups being compared.

The Sampling Distribution of Differences Between Means Approximates a Normal