I am trying to run a mixed effect model defined as:
log(volume) = A + B*time + epsilon
A = A0 + A1*T + epsilonA
B = B0 + B1*T + epsilonB
The data is tumor volumes in two groups (T = 0 or T = 1) of mice, and each mouse's log(volume) increases linearly in time, but with slopes and...