Random sample of bearings

Reference no: EM1387230

In a process that manufactures bearings, 90% of the bearings meet a thickness specification. A shipment contains 500 bearings. A shipment is acceptable if at least 440 of the 500 bearings meet the specification. Assume that each shipment contains a random sample of bearings.

a. What is the probability that a given shipment is acceptable?

b. What is the probability that more than 285 out of 300 shipments are acceptable?

Reference no: EM1387230

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