A small town has 6500 adult males and 5000 adult females. A sociologist conducted a survey and found that 40% of the males and 30% of the females drink heavily. An adult is selected at random from the town. What is the probability, rounded to four decimal places, that the person is male M?

Question

A small town has 6500 adult males and 5000 adult females. A sociologist conducted a survey and found that 40% of the males and 30% of the females drink heavily. An adult is selected at random from the town. What is the probability, rounded to four decimal places, that the person is male M? ​

Quizplus · Accepted Answer

The probability of selecting a male is the ratio of the number of adult males to the total number of adults: 
Pr(M) = 6500/(6500+5000) = 0.5652 (rounded to four decimal places). The information about heavy drinking is not relevant for this question.

A Small Town Has 6500 Adult Males and 5000 Adult