Response:
It is estimated that between 1100 and 1300 high school students in Detroit could obtain a gun if they desired to do so.
Rationale:
For the lower boundary, take 55% of 2000, which equals 0.55 × 2000 = 1100.
For the higher boundary, take 65% of 2000, equaling 0.65 × 2000 = 1300.
Therefore, the calculated range of students in Detroit who could obtain a firearm is from 1100 to 1300.