Frostline Industries manufactures freezers. Here is some information about its "LX17" line of freezers over the past year: (Click the icon to view the information.) Read the requirements. Design engineering 85,000 Total prevention costs % Appraisal Costs: Total appraisal costs % Internal Failure Costs: Total internal failure costs % External Failure Costs: Total external failure costs % Total costs of quality % 1 Data Table $ 6,000 units 1,800 700 $ 1,000 1.0 hours 10% Number of units manufactured and sold Selling price per unit .... Variable manufacturing and selling costs per unit. Hours spent by engineers improving design.. Testing and inspection hours per unit... Percentage of units reworked in the plant after inspection Average variable rework costs per freezer..... Percentage of units repaired under warranty at customers' homes. Average variable repair costs at customers' homes per freezer.. Estimated lost sales due to quality.reputation ..... Design engineer's labor rate (includes benefits and payroll taxes) Inspection costs per hour... $ 600 8% $ 650 400 units $85 per hour $45 per hour