The masses, in grams, of 200 apples of each of variety A and variety B are recorded. The cumulative frequency curves show the distributions of their masses.

1. (i)

   Use the curve to estimate

   1. (a)

      the median mass for variety A,

      Answer ... g

   2. (b)

      the 60th percentile for variety B,

      Answer ... g

   3. (c)

      the interquartile range for variety B.

      Answer ... g

2. (ii)

   George sells apples in packs of 6.
   He uses apples with a mass between 80 g and 120 g and rejects the rest.

   Which variety of apples would be better for George to use? Justify your answer using appropriate figures.

   ... because ...

   ...