DATA FW13P01; TITLE 'Chapter 13, Exercise 1';
 INPUT OBS    HOURS;
CARDS;
 1     10.1
 2     12.2
 3     12.4
 4     12.4
 5      9.4
 6     11.2
 7     14.8
 8     12.6
 9     10.1
10      9.2
11     11.0