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 17   17 1 15 0.1154   2 18 0.1385 50 3 13 0.1 63 4 20 0.1538 83 5   0.1154 98 6 16 0.1231 114 7 16 0.1231 130 a.  Complete the table (Use 5 decimal places when applicable) b.  What is the cumulative relative frequency for flossing 2 times per week? %

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