Statistic problem Please Help?
2009-02-24 5:01 pm
A radioactive sample emits an average of 6.15 alpha particles per minute. Determine the probabilities that 6.15 alpha particles emit in a one minute time interval. Using Possion Distriubtion
回答 (1)
2009-02-24 5:30 pm
✔ 最佳答案
Poisson distribution is a discrete distribution.P(x=k) = e^-λ λ^k / k! k=0,1,2,3,..........
λ =6.15 (average of alpha particles)
P( x=6.15) cannot be computed using the Poisson distribution.
We can, however compute the probability that 6 alpha particles emit
P(x=6) = e^-6.5 (6.5)^6 / 6! = 0.160327
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