Producer's risk
（重定向自Producer Risk）
Producer's risk is the probability that a good product will be rejected as a bad product by the consumer.
When the acceptance reliability level (ARL) is pi0, we can define the producer's risk as: P(Test is Failed|pi0)
It calculates the probability of loss from (1) rejecting a batch which, in fact, should have been accepted, or (2) accepting a batch that, in fact, will be rejected by the customer. As in Hypothesis testing when a null hypothesis is rejected when it is true. It is also called Type I error or Alfa error.