Mean of an exponential waiting time

The integral of t e^(-t/tau)/tau dt is tau.

Usage

ExpMean(tau)

Arguments

tau

mean waiting time, > 0.

Value

list(mean).

References

Morin, D. J. (2016). Probability: For the Enthusiastic Beginner. Createspace. Eq (4.83).

Examples

ExpMean(2.5)$mean
#> [1] 2.5