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Q.

For a binomial variate x if n=5, P(x=1)=8 P(x = 3), then q =

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a

45

b

15

c

13

d

23

answer is A.

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Detailed Solution

5C1q4p=8 5C3q2p3⇒q2=16p2⇒q=4p⇒p=15⇒q=45
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