Campbell, a single taxpayer, earns $241,500 in taxable income and $10,000 in interest from an investment in State of New York bonds. (Use the U.S. tax rate schedule.) (Do not round intermediate calculations. Round "Federal tax" to 2 decimal places.) a. How much federal tax will she owe? ederal tax b. What is her average tax rate? Average Tax Rate Choose numerator Choose denominator c. What is her effective tax rate? Effective Tax Rate Choose numerator Choose denominator