Question

A homeowner buys a package of four light bulbs, each of which has an average lifetime of 1000 hours. The homeowner, being an organized gentleman, places one of the bulbs from the package in a lamp, and the instant it burns out, replaces it with another. He continues this process until all four bulbs have burned out.
For the package of four light bulbs, what kind of random variable is Y if Y models the amount of time before all of the bulbs in the package burn out?

Answer 1

TOPIC:Type of the required random variable.