An acceptance sampling plan has lots of 500 pieces and a sample size of 60. The number of defects in the sample may not exceed 2. This plan, based on an OC curve, has a probability of 0.57 (57%) of accepting lots when the incoming lots have a defective rate of 4.0%, which is the historical average of the process. For the customers, the average outgoing quality = | |% (enter your response as a percentage rounded to two decimal places)