Electronic baseball games manufactured by Tempco Electronics are shipped in lots of 36. Before shipping, a quality-control inspector randomly selects a sample of 8 from each lot for testing. If the sample contains any defective games, the entire lot is rejected. What is the probability that a lot containing exactly 2 defective games will still be shipped? (Round your answer to three decimal places.)

Question

anonymous · Answer

attachment

anonymous · Answer

because if it has at least 1 it is reject so, if it has 2 the propability of it get shipped are null (0)

anonymous · Answer

I thought the same thing but it's wrong. It's asking what the probability of having 2 0f the 36 shipped be defective... that's where I'm stuck.

anonymous · Answer

ah wait now i get it!
(28/36) + (27/35) = 60%

correct me if it isn't this way

anonymous · Answer

or 60,487%?

anonymous · Answer

That was right! Thank you SO MUCH!

anonymous · Answer

no problem :)

anonymous · Answer

Can I ask you how you got that? It makes no sense to me.

anonymous · Answer

like if only 8 games are selected it means that 28 of the 36 boxes arent selected
so, it is 28/36 probabily to be a game with defect, and to be exactly two games with defect you have to multiply 28/36 and 28/36 the probs of two games making trough shipping