The analysis of results from a leaf transmutation experiment (turning a leaf into a petal) is summarized by the type of transformation completed: Total Textural Transformation Yes No Total Color Yes 243 26 Transformation No 13 18 A naturalist randomly selects three leaves from this set without replacement. Determine the following probabilities. A. Exactly one has undergone both types of transformations. B. At least one has undergone both transformations. C. Exactly one has undergone one but not both transformations.
D. At least one has undergone at least one transformation.

In a study of the relationship between socio-economic class and unethical behavior, 129 university of california undergraduates at berkeley were asked to identify themselves as having low or high social-class by comparing themselves to others with the most (least) money, most (least) education, and most (least) respected jobs. they were also presented with a jar of individually wrapped candies and informed that the candies were for children in a nearby laboratory, but that they could take some if they wanted. after completing some unrelated tasks, participants reported the number of candies they had taken. it was found that those who were identiď¬ed as upper-class took more candy than others. in this study, identify: (a) the cases, (b) the variables and their types, (c) the main research question, (d) identify the population of interest and the sample in this study, and (e) comment on whether or not the results of the study can be generalized to the population, and if the ď¬ndings of the study can be used to establish causal relationships.