1. in a study on the likability of comedians, 10 participants observed one of two comedians (one who was humorous and one who was not humorous), and rated how likeable these comedians were on a 9-point scale from 1 (not likeable at all) to 9 (very likeable). the ratings are the data below. rating for humorous comedian(n=5) 8 6 7 4 5rating for nonhumorous comedian (n=5) 2, 3, 4, 5, 1test whether or not likability ratings differ between groups using a .05 level of significance. state the value of the test statistic and the decision to retain or reject the null hypothesis.