Arandom sample of 184 students at south high school were surveyed on whether they would prefer going to a movie or a concert. the results are shown in the relative frequency table. which statements are correct? check all that apply. a) the marginal relative frequency for 10th graders is 0.18. b) 42% of the students prefer a concert over a movie. c) a greater ratio of 11th graders prefer a concert to a movie. d) more 12th graders were surveyed than any other grade level. e) the difference in the percent of students who prefer a movie over a concert is16%.

1. an economy consists of three workers: larry, moe, and curly. each works 10 hours a day and can produce two services: mowing lawns and washing cars. in an hour, larry can either mow one lawn or wash one car; moe can either mow one lawn or wash two cars; and curly can either mow two lawns or wash one car. a. calculate how much of each service is produced under the following circumstances: a. all three spend all their time mowing lawns. b. all three spend all their time washing cars. c. all three spend half their time on each activity d. larry spends half of his time on each activity, while moe only washes cars and curly only mows lawns b. using your answers to part a, draw a production possibilities frontier and label points a, b, c, and d on your graph. explain why the production possibilities frontier has the shape it does. c. are any of the allocations calculated in part a inefficient? explain.