Answer:
The actual annual percentage yield is 2.84 %
Explanation:
Since, the actual annual yield rate is,

Where, r is the stated annual interest rate,
n is the number of compounding periods per year,
Here, r = 2.8 % = 0.028,
And, n = 12
Thus, the actual annual yield rate is,


Hence, the actual annual percentage yield is 2.84 % ( approx ).