130 adults with gum disease were asked the number of times per week they used to floss before their diagnoses. The (incomplete) results are shown below: # of times floss per week Frequency Relative Frequency Cumulative Frequency 0 20 0.1538 20 1 14 0.1077 34 2 19 0.1462 53 3 11 0.0846 64 4       5 17 0.1308 97 6 18 0.1385 115 7 15 0.1154 130 a.  Complete the table (Use 4 decimal places when applicable) b.  What is the cumulative relative frequency for flossing 7 times per week? %

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