A hotel maintenance crew wants to estimate how many of the 12,000 lamps in their 30-story hotel need a new light bulb. Which of the following is a random sample of lamps to be inspected?(1 point)

Question

Responses

all lamps from the rooms with king-sized beds
all lamps from the rooms with king-sized beds

400 lamps on the first 10 floors
400 lamps on the first 10 floors

100 lamps on each floor chosen randomly
100 lamps on each floor chosen randomly

all lamps in booked rooms

Answer 1

The best option for a random sample of lamps to be inspected is:

100 lamps on each floor chosen randomly.

This method ensures that every floor (and thus every section of the hotel) is represented in the sample, making it more likely that the sample will be representative of the entire population of 12,000 lamps. Other options may introduce bias by only selecting from specific types of rooms or a limited number of floors.