Suppose that liquid in a cubic container is placed in a coordinate system, and at time 0, a pollen particle suspended in the liquid is at (0, 0, 0), the origin. Let Y (t) be the y-coordinate of the...

Suppose that liquid in a cubic container is placed in a coordinate system, and at time 0, a pollen particle suspended in the liquid is at (0, 0, 0), the origin. Let Y (t) be the y-coordinate of the position of the pollen after t minutes. Suppose that the process $ Y (t): t ≥ 0 % is a Brownian motion with variance parameter σ². For 0