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The answer would be 11. Hope this helps :)

The number of factory workers who are paid $10.50 per hour or more is 11.

Hourly wage interval     Frequency

  $7.50- $8.49                      1

  $8.50- $9.49                     4

  $9.50- $10.49                    6  

  $10.50- $11.49                    7

  $11.50- $12.49                    4

What is the frequency?

The frequency is the phenomenon of repetition or multiple occurrences.

From the table, the number of factory workers who are paid $10.50 per hour or more =7+4 =11

Hence, the number of factory workers who are paid $10.50 per hour or more is 11.

To get more about the frequency visit:

https://brainly.com/question/2859492