SAS was used to generate the stem-and-leaf display shown here. Note that SAS arranges the slems in descending order.

a. How many observations were in the original data set?

b. In the bottoni row of the stern-and-leaf display, identify the $tern, the leaves, and the nurntxrs in the orignal data set represented by this stem and its leaves.

c Re-create all the numbers in the data set and construct a dot plot.