Problem 4.9.7

          A/A              A/Me   \\
       x_1     x_2      x_1    x_2 \\

      2.04    98.7     1.69   98.3  \\
      1.70    98.2     1.00   97.8  \\
      1.72    98.5     1.16   97.5  \\
      1.01    98.5     1.18   97.7  \\
      1.21    98.2     0.92   96.7  \\
      1.22    98.1     1.06   96.7  \\
      1.69    97.2     1.24   96.3  \\
      1.40    96.7     1.05   96.9  \\
      1.88    97.2     0.68   97.6  \\
      1.92    97.6     1.69   97.4  \\
      2.07    97.8     1.68   97.7  \\
      1.41    97.9     1.38   96.8  \\
      1.42    97.2     0.87   96.9  \\
                       1.76   97.7  \\ 

mean  1.59    97.8     1.24   97.3  \\