試題詳解

132. A company issues auto insurance policies. There are 900 insured individuals. Fifty-four percent of them are male. If a female is randomly selected from the 900, the probability she is over 25 years old is 0.43. There are 395 total insured individuals over 25 years old.
A person under 25 years old is randomly selected.
Calculate the probability that the person selected is male.
(A) 0.47
(B) 0.53
(C) 0.54
(D) 0.55
(E) 0.56