The probability that a person is not a swimmer is 0.3 the probability that out of 5 persons 4 are swimmers is

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Solution

The correct option is A

$P (x = 4) =^{5} C_{4} (0.7)^{4} (0.3)$

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The probability that a person is not a swimmer is 0.3 the probability that out of 5 persons 4 are swimmers is

The correct option is A P(x=4)=5C4(0.7)4(0.3)

The correct option is A

$P (x = 4) =^{5} C_{4} (0.7)^{4} (0.3)$