Answer Happy

The Economic Policy Institute periodically issues reports oo wages of entry level workers, The institute reported that entry level wages for male college graduates were $21. per hour and for female college graduates were $18.80 per hour in 2011 (Economic Policy Institute website, March 30, 2012). Assume the standard deviation for male graduates is $2.30, and for ferrale graduates it is $2.05, Use z-table. Round your answers to four decimal places. a. What is the probability thatia sample of 50 male graduates will provide a sample mean within $.50 of the population mean, $21.687. (Round z value in intermediate eaiculatians to 2 decimal places.) Q b. What is the probabuly that a sample of 50 female graduates will provide a sample mean within $.50 of the population mean, $18.80 ? (Round z value in intermediate calculations to 2 decimal places.) (3) c. In which of the precrding two cases, psit (a) or part (b), do we have a higher probability of obtaining a sample estimate within $.50 of the popuiation mean? Do we have a higher probabilty of obtaining a sample estimate watin s.50 of the population mean? Why? Because the standard error for female graduates is the standard ertor for male graduates d. What in the probability that a sample of 120 female graduates. will provide a sample mean more than $30 below the poputation. mean? (Round 2 value in intermediate calculations te 2 decimal places.) 8