A nonprofit company concerned with the school dropout rates has
designed a tutoring program aimed at students between 16 to 18
years old. A national center for educational statistics reported
that the high school dropout rate for the year 2000 was
10.9%. One school district, who adopted the use of
the nonprofit's tutoring program and whose dropout rate has
always been very close to the national average, reported in
2004 that 183 of their 1772 students dropped out. Is their
experience evidence that the tutoring program has
been effective?