4. A study compared the felt intensity of unrequited love (loving someone who doesn't love you) among three groups: 50 individuals who were currently experi- encing unrequited love who had a mean experienced intensity = 3.5, S 2 = 5.2; 50 who had previously experienced unrequited love and described their experi- ences retrospectively, M = 3.2, S2 = 5.8; and 50 who had never experienced unrequited love but described how they thought they would feel if they were to experience it, M = 3.8, S 2 = 4.8. Determine the signicance of the differ- ence among groups, using the 5% level. (a) Use the steps of hypothesis testing; (b) sketch the distributions involved; (c) gure the effect size for the study; and (d) explain your answer to part (a) to someone who has never had a course in statistics