The partially filled contingency table gives the relative frequencies of the data on age (in years) and sex from the residents of a retirement home. 60-69
70-79
Over 79
Total
Male
0.17
0.1
0.13

Female
0.2
0.2
0.2

Total

1

What is the probability that a resident is in the age group 60-69?
a.
0.385
c.
0.35
b.
0.37
d.
0.4