70 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		0.1143	8
1	9	0.1286	17
2	15	0.2143	32
3	10
4	9	0.1286	51
5	4	0.0571	55
6	7	0.1	62
7	8	0.1143	70

a. Complete the table

(Use 4 decimal places when applicable)

b. What is the cumulative relative frequency for flossing 5 times per week? %