The following data give the taxes paid (rounded to thousand dollars) in 2014 by a random sample of 30 families.

11 17 35 3 15 9 21 13 5 19
5    12 8 16 10 8 12 6 14 18
8  12 5 3 14 28 38 18 22 15

a. Prepare a stem-and-leaf display for these data. Arrange the leaves for each stem in increasing order.
b. Prepare a split stem-and-leaf display for these data. Split each stem into two parts. The first part should contain the leaves 0 through 4, and the second part should contain the leaves 5 through 9.