Take the 2-minute tour ×  Hi I'm working with probability as
part of an engineering course, and I'm struggling with the
following tutorial question: Components of a certain type are
shipped to a supplier in batches of ten. Suppose that 50% of all
such batches contain no defective components, 35% contain one
defective component while 15% contain two defective components.
If two components are randomly selected from the batch. What are
the probabilities associated with 0, 1 and 2 defective
components being in the batch under each of the following
conditions? a) Neither selected component is defective. b) One
of the two components is defective. c) Both components are
defective.  I've considered using hypergeometric probability
distribution for events P(35%) and P(15%) while comparing to
P(50%) but this yields no result.  share|improve this question
Have you learned about the law of total probability? I would
suggest that you try and solve the simpler problem of one item
being selected at random from a randomly s