Answer and Explanation:
The computation of EAR for each investment is shown below:-
EAR = ((1 + APR ÷ m)^m) - 1
where m indicates compounding periods
Now we will put the values with the help of the above formula
For 9.4% APR compounded monthly is
EAR = ((1 + 0.094 ÷ 12)^12) - 1
= 9.815747%
For 9.4% APR compounded annually is
EAR = ((1 + 0.094 ÷ 1)^1) - 1
= 9.400000%
For 8.7% APR compounded daily is
EAR = ((1 + 0.087 ÷ 365)^365) - 1
= 9.088537%