Q.

The records of a hospital show that 10% of the cases of a certain disease are fatal. If 6 patients are suffering fromthe disease, then the probability that only three will die is

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a

1458×10−5

b

1458×10−6

c

41×10−6

d

8748×10−5

answer is A.

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Detailed Solution

Probability of disease is fatal =p=10%p=10100=110,q=910Number of patients - 6, Number of die cases = 3 .'. Probability that 3 patients will die =6C311039103=1458×10−5
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