About % of the area is between z=−3.5 and z=3.5 (or within 3.5 standard deviations of the mean).

Players on the school soccer team are selling candles to raise money for an upcoming trip. each player has 24 candles to sell. if a player sells 4 candles a profit of$30 is made. if he sells 12 candles a profit of $70 is made