Each main bearing cap in an engine contains 4 bolts. The bolts are selected at random without replacement, from a parts bin that contains 30 bolts from one supplier and 70 bolts from another. Round your answers to 4 decimal places (e.g. 98.7654). (a) What is the probability that a main bearing cap contains all bolts from the same supplier? (b) What is the probability that exactly 3 bolts are from the same supplier? i

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