The economic policy institute periodically issues reports on worker's wages. The institute reported that mean wages for male college graduates were per hour and for female college graduates were per hour in. Assume the standard deviation for male graduates is , and for female graduates it is. Use z-table.

The smokey mountains have over 2,100 miles of rushing mountain streams and rivers that flow through the park. in each mile lives a diverse community of native fish, amphibians, insects, and larvae, some of which are found only in the southern appalachians. park managers and scientific researchers test many factors such as fish populations, the watersheds and water tests to determine a) too many lizards are present b) the water quality of the stream c) rainwater is running into local streams d) if visitors to the park are overstaying their welcome