Part 1 of 3 A study shows that water usage is normally distributed with an average shower using 17 8 gal with a standard deviation of 2 3 gal Find each 1 decimal answer The percent of showers that use between 10 9 and 24 7 gal Part 2 of 3 010 X The percent of showers that use more than 22 4 gal OC 15