Question

The chance of a traffic accident in a day attributed to a taxi driver is $0.001$. Out of a total of $1000$ days the number of days with no accident is

• A. $1000\times e^{-1}$
• B. $1000\times e^{-0.1}$
• C. $1000\times e^{-0.001}$
• D. $1000\times e^{-0.0001}$

Answer 1

Answer: (C)

$1000\times e^{-0.001}$

Here $\lambda =0.001$
Hence number of day out of 1000 days without accident is $1000\times P(X=0)=1000\times e^{-0.001}$