Amanufacturing firm just received a shipment of 54 assembly parts, of slightly varied sizes, from a vendor. the manager knows that there are only 38 parts in the shipment that would be suitable. he examines these parts one at a time. a. find the probability that the first part is suitable. (round your answer to 2 decimal places.) b. if the first part is suitable, find the probability that the second part is also suitable. (round your answer to 4 decimal places.) c. if the first part is suitable, find the probability that the second part is not suitable. (round your answer to 4 decimal places.)