9) Indicate which of the following variables represent discrete or continuous scales: a) The time it takes you to complete these problems b) The number of newspapers sold in a given city on December 19,1991 c) The amount of change in weight of 5 women during a period of 4 weeks d) The number of home runs hit by each of 10 randomly selected batters during 1991 baseball season e) The number of stocks on the New York Stock Exchange that increased in price on a given day