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A poisson variate x is such that P(x=2)=...

A poisson variate x is such that `P(x=2)=9P(x=4)+90.P(x=6)` then mean and standard deviation are

A

1, 1

B

1, 2

C

2, 2

D

`2,sqrt(2)`

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A
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AAKASH SERIES-RANDOM VARIABLE -EXERCISE - II
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