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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

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

the answer is actually D

b

step-by-step explanation: