previously, 5% of mothers smoked more than 21 cigarettes during their pregnancy. an obstetrician believes that the percentage of mothers who smoke 21 cigarettes or more is less than 5% today. she randomly selects 115 pregnant mothers and finds that 2 of them smoked 21 or more cigarettes during pregnancy. test the researcher's statement at the alpha equals 0.1 level of significance. what are the null and alternative hypotheses? upper h 0: p equals 0.05 versus upper h 1: p less than 0.05 (type integers or decimals. do not round.) because np 0 (1 minus p 0 )equals nothing ▼ 10, the normal model ▼ be used to approximate the p-value.

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.