In a study of gender roles in television advertising a resea

In a study of gender roles in television advertising, a researcher sampled 275 commercials broadcast in the United States. In one pan of the study, the men and women who appeared in the commercials were categorized by their (estimated) age as shown in the accompanying table. A total of 301 commercial characters were classified; only those who appeared on camera for at least three seconds and/or who had at least one line of dialogue were counted. For a character chosen at random from this study, what is the probability of being under 35? If the character is known to be a woman, what is the probability of being under 35?

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