T-test supplemental problems – Do all of these problems with R, include command line, then add four steps, effect size, and explained variance if appropriate. Upload documents to the dropbox when...

T-test supplemental problems – Do all of these problems with R, include command line, then add four steps, effect size, and explained variance if appropriate. Upload documents to the dropbox when finished. 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. Test to see if the humorous comedian was liked more than the nonhumorous comedian, using alpha = .05 and four steps. Also calculate and interpret effect size and explained variance if appropriate. Ratings for humorous comedian Ratings for nonhumorous comedian 8 2 6 3 7 4 4 5 5 1 2. A researcher records the number of words recalled by students presented with a list of words for one minute. In one group, students were presented with the list of words in color and for the other group, the words were presented in black and white. Test to see if there are differences in the number of words recalled, using alpha = .05 and four steps. Also calculate and interpret effect size and explained variance if appropriate. Words recalled for B/W condition Word recalled in color condition 4 7 5 12 1 8 3 11 3. A psychologist wants to know if husbands or wives are happier with their marriages, so using a matched-pairs design, she got six married couples and asked each partner to rate how satisfied they are with their spouse on a 7-point scale ranging from 1 (not satisfied at all) to 7 (very satisfied). Data are below. Test to see if there are differences, using alpha = .05 and four steps. Also calculate and interpret effect size and explained variance if appropriate. Wife Husband 7 5 4 6 7 5 7 6 7 5 6 5