Classify each random variable as discrete or continuous. Discrete Continuous Answer Bank The number of lightning bugs in the backyard of a rural home The number of oil tankers registered to a certain country at a given time The volume of ice cream in one scoop The area of a randomly selected baseball field including the foul territory The number of late deliveries in one month by a package delivery service The number of girls born in a rural hospital during the next year The number of tickets sold in the next Powerball lottery The interest rate on a savings account at a randomly selected bank in Philadelphia