A factory records the number of light bulbs that last for different durations.
| Lifespan | Less than \(500\) hours | \(501 - 1000\) hours | \(1001 - 1500\) | More than \(1500\) hours |
| Number of bulbs | 30 | 150 | 270 | 90 |
Find the probability that a randomly selected bulb lasts for more than \(1500\) hours.
Answer:
The probability that a selected bulb lasts for more than \(1500\) hours is
(Note: Write the answer in a simplified form.)