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 (60-69)

0.1 (70-79)

0.13 (over 79)

Female

0.2 (60-69)

0.2 (70-79)

0.2 (over 79)

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

Answer with Step-by-step explanation:

                    Male             Female                

60-69            0.17                 0.2

70-79              0.1                  0.2

Over 79          0.13                 0.2

As we can clearly see from the table above that probability that a resident is in age group 60-69 is:

0.17+0.2

= 0.37

Hence, correct option is:

c.  0.37