Lifetime of Fluorescent Light Bulbs

question 213

Essay

Lifetime of Fluorescent Light Bulbs
The mean lifetime of a fluorescent light bulb is 1570 hours with a standard deviation of 200 hours. Suppose we take a sample of 100 bulbs, test them, and calculate the sample mean.
-Refer to Lifetime of Fluorescent Light Bulbs. Completely describe the sampling distribution of the sample mean.

---

Definitions:

Straight-line Method

A method of calculating depreciation whereby an asset's cost is evenly spread over its useful life.

Salvage Value

The estimated residual value of an asset at the end of its useful life, often considered for depreciation calculations.

Useful Life

The estimated duration a fixed asset is expected to be economically usable, with normal repairs and maintenance, for it to generate revenue.

Leasehold Improvements

Enhancements made to rental premises by a tenant, such as additions or renovations, which typically revert to the landlord upon lease termination.