1. You oversee order receipts into a large warehouse and components from a particular supplier have dubious quality. You use acceptance sampling to determine the disposition of parts received. You inspect all the parts in three randomly selected crates (each crate contains 20 components) and classify them as conforming or non-conforming to the specification. Here is the data for the past 15 shipments:

Shipment	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15
Count Defective	1	5	2	0	1	2	3	2	6	1	3	2	4	1	0

Construct the appropriate control chart and determine if the process is likely in control or not.