If the mean of an exponential distribution is 2,then the value of the parameter λ is 2.0.

Exponential Distribution

A continuous probability distribution used to model the time between events in a process where events occur continuously and independently at a constant average rate.

Mean

The average of a set of numbers, computed by dividing the sum of these numbers by the count of numbers in the set.

Parameter λ

Often used to denote a rate parameter in exponential distributions which quantifies the frequency of occurrence for a given event.