Question: Four hundred automobiles are to be inspected for California emissions compliance. Of these, 320 actually are compliant but 80 are not. A random sample of

Four hundred automobiles are to be inspected for California emissions compliance. Of these, 320 actually are compliant but 80 are not. A random sample of 6 cars is chosen.
(a) Justify the use of the binomial approximation.
(b) What is the probability that all are compliant?
(c) At least 4?

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