The following data represent the length of life, in seconds, of 50 fruit flies subject to a new spray in a controlled laboratory experiment: 17 20 10 23 13 12 19 18 24 12 14 13 10 13 16 18 13 32 10 11...

The following data represent the length of life, in seconds, of 50 fruit flies subject to a new spray in a controlled laboratory experiment:

(a) Construct a double-stem-and-leaf plot for the life span of the fruit flies using the stems 0∗, 0·, 1∗, 1·, 2∗, 2·, and 3∗such that stems coded by the symbols _ and · are associated, respectively, with leaves 0 through 4 and 5 through 9.

(b) Set up a relative frequency distribution.

(c) Construct a relative frequency histogram.

(d) Find the median.