Statistical Quality Control (L.O.3): Eagle Feather Industries has a process with a standard deviation of $115 for each batch of feathers produced and an expected cost of $1,430 per batch. Six batches of feathers were produced in the current week. The costs for each batch are as follows:

Eagle uses a two-standard deviation quality control limit.

Required: Which of the six batches should be investigated? For each batch that should be investigated, state the reason for the investigation.

Transcribed Image Text:

Batch Cost A $1,365 oooui khi B 1,115 1,478 1,681 1,522 1,297