The Time Between Customer Arrivals at a Furniture Store Has $\theta = 8.5$

Multiple Choice

The time between customer arrivals at a furniture store has an approximate exponential distribution with mean $\theta = 8.5$ 8.5 minutes. If a customer just arrived, find the probability that the nex customer will arrive in the next 5 minutes.

A) 0.555306
B) 0.182684
C) 0.444694
D) 0.817316