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An aircraft has \(120\) passenger seats. The number of seats occupied during \(100\) flights is given in the following table :
| Number of seats | \(100-104\) | \(104-108\) | \(108-112\) | \(112-116\) | \(116-120\) |
| Frequency | \(15\) | \(20\) | \(32\) | \(18\) | \(15\) |
Determine the mean number of seats occupied over the flights.
Answer:
The mean is .
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