A hotel maintenance crew wants to estimate how many of the 12000 lamps in their 30 story hotel need a new light bulb
To estimate how many lamps need a new light bulb, the maintenance crew can conduct a survey by randomly selecting a sample of lamps throughout the hotel. They can then record the number of lamps that require a new light bulb in the sample and use this information to estimate the overall proportion of lamps in need of replacement.
For example, if the crew surveys 300 lamps and finds that 30 of them need a new light bulb, they can estimate that approximately 10% of the lamps in the hotel need replacement (30/300 = 0.10 or 10%).
Based on this estimate, they can calculate that around 1200 (10% of 12000) lamps in the hotel may need a new light bulb. However, this is just an estimate and the actual number may vary.