(a) What is the Predetermined overhead rate? (b) By how much is the manufacturing overhead underapplied or overapplied? 3. Either print or make a copy of yout worksheet in your workbook before proceeding. You will need to refer back to this worksheet Change the estimated amount of the allocation base 10.49,000 machine-hours, but keep everything the same as in Requirement 2 The data area of yout worksheet should now look like this: (a) By how much is the manufactuning overhead underapplied or overapplied? (b) Why is the amount of underapplied (overapplied) manufacturing overhead different from Requirement 2 above? 4. Change the estimated amount of the allocation base back to 43,000 machine-hours, so the data area of you worksheet looks exactly the same as in Requirement 2 . Now change the actual manufacturing overhead cost from $216,700 to $209,900. The data area of your worksheet should now look like this: (a) By how much is the manufacturing overhead underapplied or overapplied? (b) Why is the underapplied (overapplied) manufacturing overhead different from Requirement 2 above? Complete this question by entering your answers in the tabs below. What is the Predetermined overhead rate? Note: Round your answer to 2 decimal places