A group of students are competing in a trivia night and hypothesize that they can answer more questions correctly than the previous year's group. If the average number of correct answers by the previous group is 43, how did the group of students compare to the previous year's edition? Conduct a one-sample t-test and assume a one-tailed hypothesis with = .01.

Score

50 42 55 61 42 60 40

b.Calculate the effect size (Cohen's d) for question 18 above and indicate the relative size of the effect.