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. (in $.92$)

  • A
    $109$
  • B
    $105$
  • C
    $115$
  • D
    $209$

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