Chapter 3: Applying Excel: Exercise (Part 2 of 2) 2. Change all of the numbers in the data area of your worksheet so that it looks like this: A B C 1 Chapter 3: Applying Excel 2 3 Data 4 Allocation base Machine-hours 5 Estimated manufacturing overhead cost $ 258,500 6 Estimated total amount ofthe allocation base 47,000 machine-hours 7 Actual manufacturing overhead cost $ 246,300 8 Actual total amount of the allocation base 50,000 machine-hours If your formulas are correct, you should get the correct answers to the following questions. (a) What is the Predetermined overhead rate? (Round your answer to 2 decimal places.) (b) By how much is the manufacturing overhead underapplied or overapplied