Author Question: A researcher selects a pair of random samples. In Group 1 the scores are 10, 4, 12, 5, 4, 6, 8, 7. ... (Read 40 times)

waynest · **on:** Jun 20, 2018

A researcher selects a pair of random samples. In Group 1 the scores are 10, 4, 12, 5, 4, 6, 8, 7. In Group 2 the scores are 6, 4, 9, 3, 2, 5, 7, 4.

a. Find the t ratio
b. As a two-tail t, should Ho be rejected?
If rejected, state the probability of the alpha error.
c. Do the two groups represent a single population?

Question 2

With an equal mean difference, when the correlation is significant, the
paired t results in a higher t ratio than does the independent t.

Indicate whether the statement is true or false