Hurry ! mr. mcelroy enjoys listening to his mp3 player, which has 2,000 songs in five different genres of music. he took a sample of the number of each type of song it played on two different one-hour sessions when it was set to play a random mix. the results are displayed in the table below. what is a good prediction for the number of rock songs mr. mcelroy has on his mp3 player? a) 225 b) 550 c) 1100 d) 1667