Sansa was explaining the meaning and usefulness of the statement tan 40° ≈ 0. 84. Which true statements below could be part of that explanation? Select all that apply.

o All right triangles with an acute angle of 40° are similar to each other.

o The sum of the squares of the legs of right triangles with a 40° angle equal 40".

o Knowing that tan 40° ≈ 0. 84 is enough information to calculate the sides of any 40°-

50°-90° triangle.

o If you know tan 40° ≈ 0. 84 and the length of the leg opposite to the 40° angle, then

you can calculate the length of the other leg.

o The ratio of the opposite side to the hypotenuse in any right triangle with an angle of

40° is always approximately 0. 84

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.