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

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

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

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

all lamps in booked rooms

Answer 1

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

100 lamps on each floor chosen randomly.

This choice ensures that every floor of the hotel is equally represented in the sample, which is important for making an accurate estimation of the total number of lamps that need a new light bulb across the entire hotel. The other options either focus on specific types of rooms or a limited number of floors, which could lead to bias in the sample.