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A store has recorded customer sales ($) for a sample of recent sales, summarised in the following table: Class Frequency (0, 150] 33 (150, 300]

A store has recorded customer sales ($) for a sample of recent sales, summarised in the following table:

Class

Frequency

(0, 150]

33

(150, 300]

9

(300, 450]

30

(450, 600]

19

(600, 750]

23

(750, 900]

14

(900, 1050]

42

How many customers spent less than or equal to $300?

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