A) \[{{e}^{-0.3}}\]
B) \[{{e}^{-0.5}}\]
C) \[{{e}^{-1}}\]
D) \[{{e}^{-2}}\]
Correct Answer: C
Solution :
[c] Here number of erros per page \[=\frac{250}{500}=\frac{1}{2}\] And \[n=2\therefore \lambda =np=2\times \frac{1}{2}=1\] And probability of no error \[P(X=0)=\frac{{{e}^{-1}}\times {{(1)}^{0}}}{0!}={{e}^{-1}}\]You need to login to perform this action.
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