mean 0 1 2 3 A B data: A and Bt = 3.9149, df = 18.678, p-value = 0.0009563 * * * * * * * * * * * * * * * * *d -index * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * A A "d-index= "1 . 50998" change=" "43 .45" Q1. Is the two-sample t-test statistically significant? Write up results of the t-test. Q2. What is the effect size