Posted: December 21st, 2016

he comparison distribution for a t test for independent means is a:

1. The comparison distribution for a t test for independent means is a:
Distribution of differences between means
Z distribution ( a normal curve)
Distribution of difference scores
Distribution of proportional variance scores

2. Consider a study in which the population variance estimate based on treatment group of 14 participants is 8, and the population variance estimate based on a control group of 17 individuals is 9. Compute the pooled estimate of population variance.
7.25
8.55
9.22
10.05