Percentile Rank Change

Millie and Senta Meter have recently taken Pre and Post test in achievement. The test were normally distributed. Millie’s percentilerank changed from 57.93 to 77.34. Senta’s changed from 1.07 to 4.95. Which of the following states is correct.

A. Millie improved more the Senta.
B. Senta improved more then Millie.
C. They improved the same amount .

The expert examines the percentile rank change. Senta’s change from an interval is given.