The periodic interest rate applicable semiannually is approximately C. 6.30%.
How to solve
To determine the periodic interest rate applicable semiannually for a bank that pays interest semiannually with an EAR of 13%, you can use the following formula:
Periodic interest rate = (√(1 + EAR) - 1) / Number of compounding periods per year
In this case, the EAR is 13% and the number of compounding periods per year is 2 (since interest is compounded semiannually). Plugging these values into the formula, we get:
Periodic interest rate = (√(1 + 0.13) - 1) / 2 ≈ 0.0630
Therefore, the periodic interest rate applicable semiannually is approximately 6.30%.