Vaughn's Piano Service, Inc, is trying to establish the standard labor cost of tuning a typical piano. The following data have been collected from time and motion studies conducted over the past three months, Your answer has been saved, See score details after the due date. Determine the standard direct labor hour per ech piano that is tuned. (Round your intermediate calculations and final answer to 2 decimal ploces, es. 15.25.) Standard direct labor hour hours Attempts: 1 of 1 used (b) Determine the standard direct labor hourly rate. Standard direct labor rate 5 perhour