Suppose that in manufacturing process, the probability of a certain item being defective
Suppose that in manufacturing process, the probability of a certain item being defective is p=0.05. Suppose that the quality of an item is independent of the quality of the other manufactured items. An inspector selects six items at random and let X equal the number of defective items in the sample space.
(i) How is X distributed?
(ii) Find the probability of at most two defective and at least two defectives.