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17 May, 10:43

At West High School, 10% of the student population is taking a calculus course, 8% is taking a physics course, and 6% is taking both. Find the probability that a student chosen at random is taking a physics course, given that the student is taking a calculus course. A. 0.06 B. 0.60 C. 0.70 D. 0.75

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  1. 17 May, 11:04
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    We suppose the total student is x. So the student taking a calculus course is 0.1x. The student taking both is 0.06x. When the student taking a calculus course, he also takes physics course is 0.06x/0.1x=0.6. The answer is B.
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