1
QuizMultiple Choice

Probability

Question 1 • CARE_24_25_TX-Mathematical Models with Applications B

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. 60-6970-79Over 79TotalMale0.190.10.11 Female0.20.10.3 Total 1What is the probability that a resident is male and in the age group 60-79?

Answer
A
0.31
B
0.28
C
0.29
D
0.305

Explanation

The age group 60–79 includes both the 60–69 and 70–79 columns. For male residents, add those relative frequencies: 0.19 + 0.10 = 0.29. So the probability is 0.29, choice c.

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