Q10) AT&T was running commercials in 1990 aimed at luring back customers who had switched to one of the other long-distance phone service providers. One such
commercial shows a businessman trying to reach Phoenix and mistakenly getting
Fiji, where a half-naked native on a beach responds incomprehensibly in
Polynesian. When asked about this advertisement, AT&T admitted that the
portrayed incident did not actually take place but added that this was an
enactment of something that "could happen." Suppose that one in 200 long-
distance telephone calls is misdirected. What is the probability that at least one in
five attempted telephone calls reaches the wrong number? (Assume
independence of attempts.)

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.