The Economic Policy Institute periodically issues reports on
worker's wages. The institute reported that mean wages for male
college graduates were $37.39 per hour and for female college
graduates were $27.83 per hour in 2017 . Assume the
standard deviation for male graduates is $4.60, and for female
graduates it is $4.10. Use z-table.
Round your answers to four decimal places.
a. What is the probability that a sample of 120 female
graduates will provide a sample mean more than $0.60 below the
population mean, $27.83 ?