Answer: 14.28%
Explanation:
Effective Annual Rate is the rate that takes the periodic rates and converts it to an annual rate if compounding the periodic rate was taken into account.
The formula is;
EAR = (1 + r/m)^m - 1
Where;
r is the Annual nominal rate of interest and,
m is Number of compounding periods in a year
EAR = ( 1 + 13.8/2)² - 1
= 1.142761 - 1
= 0.142761
= 14.28%