The list shows the number of songs that five students each downloaded last week. 32, 43, 38, 28, 51 what is the mean absolute deviation of the numbers in the list?
a 34.4
b 6.88
c 38.4
d 7.68

Afootball quarterback has two more chances to throw a touchdown before his team is forced to punt the ball. he misses the receiver on the first throw 25% of the time. when his first throw is incomplete, he misses the receiver on the second throw 15% of the time. what is the probability of not throwing the ball to a receiver on either throw?