D
100 lamps on each floor chosen randomly
This option involves randomly selecting a sample of lamps from each floor, which would provide a more representative sample of the overall distribution of lamps in the hotel. This random selection process helps to reduce bias and ensure that the sample is more reflective of the entire population of lamps in the hotel.
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?
A
400 lamps on the first 10 floors
B
all lamps in booked rooms
C
all lamps from the rooms with king-sized beds
D
100 lamps on each floor chosen randomly
1 answer
3 answers