The average lifetime of a certain new cell phone is 6 years. The manufacturer will replace any cell phone failing within 2 years of the date of purchase. The lifetime of these cell phones is known to follow an exponential distribution. What is the decay rate?

1/6

Step-by-step explanation:

Let X = amount of time (in minutes) a postal clerk spends with his or her customer. The time is known to have an exponential distribution with the average amount of time

X is a continuous random variable since time is measured. It is given that μ = 6 years. To do any calculations, you must know m, the decay parameter.

m = 1/μ = 1/6

So the decay rate is 1/6