A college has a limited enrollment summer course that only accepts 505050 students, selected at random from the more than 200020002000 qualified students who apply each year. Of these applicants, 22\%22%22, percent have completed 222 or fewer years of college. Suppose the registrar calculates the annual proportion \hat p p
^

p, with, hat, on top of students accepted into the course who have completed 222 or fewer years of college.
Which of the following distributions is the best approximation of the sampling distribution of \hat p
p
^

p, with, hat, on top?
Each distribution uses the same scale.

If square root x = -7, then x= -49 true or false

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.

Which of the following is the major negative aspect of crossover designs for research studies? a. prohibitive cost b. residual effects c-subject drepout d. incomplete randomization e. large sample size required