In a certain county in 2013, it was thought that 50% of men 50 years old or older had never been screened for prostate cancer. suppose a random sample of 200 of these men shows that 120 of them had never been screened.
a. what is the observed frequency of men who said they had not been screened? b. what is the observed proportion of men who said they had not been screened? c. what is the expected number in the sample to say they had never been screened if 50% is the correct rate?

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.