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Problem

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Textbook Expert
Textbook ExpertVerified Tutor
10 Nov 2021

Given information

Below table is given :

Total number adults  

Step-by-step explanation

Step 1.

From the table below:

 

Percent flossed at most three times per week included all numbers before it.That is cumulative frequency up to 3.

From the table, cumulative frequency for 3  

                                                               

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