Answer: between 1 and 1.6
Step-by-step explanation:
The Market Beta is 1.0 which is why in the long run, betas will equal 1 and so will move steadily towards 1 overtime.
The adjustment technique will therefore show a beta between 1 and 1.6 because the 1.6 will move on to 1 overtime.
To explain, the adjustment technique is as follows;
Adjusted beta = 2/3(sample beta) + 1/3(1)
= 2/3(1.6) + 1/3
= 1.4
The adjusted beta of 1.4 is between 1 and 1.6.