AP Stats - Chapter 5 Review (ALL RELEASED AP EXAM QUESTIONS)

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Internet sites often vanish or move, so that references to them can’t be followed. In fact, 13% of Internet sites referenced in major scientific journals are lost within two years after publication. If we randomly select seven Internet references, from scientific journals, what is the probability that at least one of them doesn’t work two years later?

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• 0.130

• 0.377

• 0.752

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Of people who died in the United States in a recent year, 86% were white, 12% were black, and 2% were Asian. (We will ignore the small number of deaths among other races.) Diabetes caused 2.8% of deaths among whites, 4.4% among blacks, and 3.5% among Asians. What is the probability that a randomly chosen death was due to diabetes?

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• 0.107

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• 0.030