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Algebra 2 · Chapter 12 · Lesson 12.9 · Printable PDF

The Law of Total Probability Worksheet with Answer Key

6 problems on the law of total probability: finding the probability of A from a partition, deciding what is a partition of high school students, movie night weather, Zoe's three bike routes drawn as a tree, laptops from three suppliers, and two cups of markers. 3 pages, with a worked answer key.

6 problems3 pagesanswer key
Printable The law of total probability worksheet with answer key - Algebra 2 (Page 1 PDF preview)
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Try one first: a free Chapter 1 worksheet (PDF, no sign-in).

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What's on the worksheet

  1. Find the probability of A in each part, using a partition where it applies.
  2. Decide for each list of cases whether it is a partition of the students.
  3. Word problem: the chance a free outdoor movie goes on, from clear, cloudy and rainy evenings.
  4. Word problem: the chance Zoe is on time using the tree of her three routes.
  5. Word problem: laptops from three suppliers and the chance one is faulty.
  6. Word problem: the chance a marker works when taken from one of two cups.

Teach it first

The free lesson teaches it with worked examples and practice problems.

The law of total probability: the lesson ›

More Chapter 12 worksheets: Probability