Is λ Equal to 0.01 or 100 for a Light Bulb with 100 Hour Life Expectancy?

[peripatein]

Hi,

Homework Statement

If the life expectancy of a light bulb is a random exponential variable and equal (on average) to 100 hrs, is λ then equal to 0.01 or to 100? (λ = 1/expectation)

 

[Bacle2]

Hi,peripatein, you're supposed to show us your work. What have you done/tried so far?

 

[peripatein]

There is no work involved. I wasn't asking for help to solve anything; this merely regards an uncertainty I have concerning λ. I am simply not sure whether it should be 1/100 or 100, given the above details. I am not really sure what work you are asking me to show.

 

[haruspex]

You seem to have answered your own question: expectation = 100hrs, λ = 1/expectation.