ashtyndowdle
05.08.2019 •
Mathematics
Container 1 has 8 items, 3 of which are defective. container 2 has 5 items, 2 of which are defective. if one item is drawn from each container, what is the probability that only one of the items is defective?
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Ответ:
The required probability is
Step-by-step explanation:
The probability of obtaining a defective item from container 1 is
The probability of obtaining a good item from container 1 is
The probability of obtaining a defective item from container 2 is
The probability of obtaining a good item from container 2 is
The cases of the event are
1)Defective item is drawn from container 1 and good item is drawn from container 2
2)Defective item is drawn from container 2 and good item is drawn from container 1
Thus the required probability is the sum of above 2 cases
Ответ:
1 + 2/3 = 5 / 3
6 + 1/2 = 13 / 2
13 / 2 * 5 / 3 = 65 / 6 hours