If the mean of a poisson variable X is 1, what is P(x = at least one) ?

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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If the mean of a poisson variable X is 1, what is P(x = at least one)?
[a] 0.456
[b] 0.821
[c] 0.632
[d] 0.254
Transcribed Image Text:If the mean of a poisson variable X is 1, what is P(x = at least one)? [a] 0.456 [b] 0.821 [c] 0.632 [d] 0.254
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