The lifetime of a light bulb is exponentially distributed with $\lambda$= 0.001.
a. What are the mean and standard deviation of the light bulb's lifetime?
b. Find the probability that a light bulb will last between 110 and 150 hours.
c. Find the probability that a light bulb will last for more than 125 hours.

Question

Quizplus · Accepted Answer

The Answer of The lifetime of a light bulb is exponentially distributed with $\lambda$= 0.001.
a. What are the mean and standard deviation of the light bulb's lifetime?
b. Find the probability that a light bulb will last between 110 and 150 hours.
c. Find the probability that a light bulb will last for more than 125 hours.

The Lifetime of a Light Bulb Is Exponentially Distributed With \lambda