(20 Points) A hospital receives 1/4 of its flu vaccine shipments from Company X and the remainder of its shipments from
Posted: Thu May 12, 2022 9:19 am
(20 Points) A hospital receives 1/4 of its flu vaccine shipments from Company X and the remainder of its shipments from other companies. Each shipment contains a very large number of vaccine vials. For Company X's shipments, 5% of the vials are ineffective. For every other company, 1% of the vials are ineffective. The hospital tests 30 randomly selected vials from a shipment and finds that one vial is ineffective. What is the probability that this shipment came from Company X?