1- a local university administers a comprehensive examination to the candidates for b. s. degrees in business administration. five examinations are selected at random and scored. the scores are shown below. grades 80 90 91 62 77 a. compute the mean and the standard deviation of the sample. b. compute the margin of error at 95% confidence. c. develop a 95% confidence interval estimate for the mean of the population. assume the population is normally distributed.

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.