23: Five of the light bulbs in a box of nine bulbs are burnt out or otherwise defective wo bulbs are selected at random without replacement and tested. - If the first bulb is normal, what is the probability that the second bulb is defective? - If the first bulb is normal, what is the probability that the second bulb is also normal? - what is the probability that exactly one defective bulb is found?
23: Five of the light bulbs in a box of nine bulbs are burnt out or otherwise defective wo bulbs are selected at random without replacement and tested. - If the first bulb is normal, what is the probability that the second bulb is defective? - If the first bulb is normal, what is the probability that the second bulb is also normal? - what is the probability that exactly one defective bulb is found?
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 11ECP: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces....
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Transcribed Image Text:Q3: Five of the light bulbs in a box of nine bulbs are burnt out or otherwise defective. If
two bulbs are selected at random without replacement and tested.
1- If the first bulb is normal, what is the probability that the second bulb is defective?
2- If the first bulb is normal, what is the probability that the second bulb is also normal?
3- what is the probability that exactly one defective bulb is found?
4- what is the probability that exactly two normal bulbs are found?
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