Na city, 49% of the adults are male. 24% of the adults are male and rent action-movie dvds, and 10% of the adults are female and rent action-movie dvds. if an adult is randomly selected for a survey, what is the probability that the adult rents action-movie dvds, given that the adult is female?

Let's assume that since 49% of the adults in the city are males, then the rest of the population (which is 51%) are females. This means that 51 adults out of 100 (hypothetically) are females. Since the percentage of adult females who rent action-movie DVDs is 10% and there are 51 females in the city, then it should come at a ratio of 10/51. 

Thus, the answer is that the probability of an adult female who rents action-movie DVD getting picked in the sample is .1961 or .20 (that's 20%) of the whole population in the city.

The answer would be choice b