WEBVTT
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Hi. We're looking at the question that I asked
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about the probability of musician is a female or is
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self taught. And this one's a little more challenging
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because we've got a look at the probability that they're
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female, um, and self taught as well,
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a cz probability of just female and just sell thought
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. So remember, we need to find the probability
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that they're female, something F for female, plus
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the probability that they're self taught and I'll put S
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t for self tart. And then we have to
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subtract the probability that they're female and self taught because
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we don't want a double count on those people because
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they wouldn't actually be in the in the study twice
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. And so for answer the probability that the student
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is female. In general, you take the female
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column and follow it to the far right and get
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72 plus the probability that they're self taught. So
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we find the self top column and follow that down
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to 31 and then subtract the probability that they're both
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female and self taught, which is finding that row
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and column and where they need, which is 12
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. So that means that we have a total of
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91 students who are female or self taunts. And
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then we can divide that by the total in the
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whole table, because the 91 is our favorable outcomes
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. And remember, probability is favorable outcomes divided by
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possible all possible outcomes. And so 91 is our
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favorable outcomes and one thirties or possible outcomes. So
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we end up with 0.7. Thank you.