A rowing team rowed 90 miles while going with the current in the same amount of time as it took to row 10miles going against the current. The rate of the current was 4 miles per hour. Find the rate of the rowing team in still water.

The accompanying data represent the miles per gallon of a random sample of cars with a three-cylinder, 1.0 liter engine. (a) compute the z-score corresponding to the individual who obtained 42.342.3 miles per gallon. interpret this result.