Question 4: 1 point

If the null hypothesis is rejected following an analysis of variance, then

A) the within-group variance is significantly larger than the between-group variance.

B) the variation between sample means reflects the variation within the populations and the variation between the population means.

C) the variance within each sample is larger than if the null hypothesis were true.

D) the variance between sample means is no greater than the variance within the population with the largest variance.

In an analysis of variance, the between-group estimate of the population variance is 27 and the within-group estimate is 22. What is the F ratio?

A) 22/(2722) = 4.40

B) (2722)/27 = 0.19

C) 22/27 = 0.81

D) 27/22 = 1.23