Each month DINGO Ltd receives a shipment of 100 parts from its supplier, which will be checked on delivery for defective parts. Historically, the average number of defective parts was 5. The new...

Each month DINGO Ltd receives a shipment of 100 parts from its supplier, which will be checked on delivery for defective parts. Historically, the average number of defective parts was 5. The new quality assurance procedure involves randomly selecting a sample of three items (without replacement) for inspection. If more than one of the sample is defective the order is returned. What proportion of shipments might be expected to be returned?