Grade 12Algebra
A random variable X has Poisson distribution with mean 2. Then P(X > 1.5) equals ?
1 Answer
SHAIK AASIF AHAMED
Hello student,
P(x = k) =e−λ(λk/k!)
P(x ≥ 2) = 1 – P(x = 0) – P(x = 1)
= 1 – e-λ – e-λ(λ/1!)
P(x ≥ 2) = 1 – P(x = 0) – P(x = 1)
= 1 – e-λ – e-λ(λ/1!)
=1-(3/e2)
Thanks and Regards
Shaik Aasif
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