Answer to Question #200693 in Statistics and Probability for Bazin

Statistics and Probability

Question #200693

Interarrival time of mails are exponentially with a mean 10 minutes what is the probability 5 mails arrive in 20 minutes?

Expert's answer

Given $\lambda=1/10=0.1$

P(x\leq\dfrac{20}{5})=1-e^{0.1(4)}\approx0.3297

The probability 5 mails arrive in 20 minutesn is $0.3297.$

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