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More on Probability (Text Sec. 6.3)

More on Probability (Text Sec. 6.3). General Probability Rules. See Sec. 6.3 Summary for Recap of Definitions and Rules/Formulas. Key Notes General Addition Rule Multiplication Rule Conditional Probability.

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More on Probability (Text Sec. 6.3)

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  1. More on Probability (Text Sec. 6.3) General Probability Rules

  2. See Sec. 6.3 Summary for Recap of Definitions and Rules/Formulas. • Key Notes • General Addition Rule • Multiplication Rule • Conditional Probability

  3. Urn 1 Contains 5 red marbles and 3 black marbles. Urn 2 contains 3 red marbles and 1 black marble. Urn 3 contains 4 red marbles and 2 black marbles. If an urn is selected at random and a marble is drawn, find the probability it will be red.

  4. Conditional Probability Example • A circuit to run a model railroad has 8 switches. Two of them are defective. If a person selects two switches at random and test them, find each probability: • Both are good. • Both are defective. • The first is defective and the second is good. • The second is good, given the first is good. • The second is defective, given the first is defective.

  5. Consider the following table concerning utility patents granted for a specific year. • If a patent is selected at random, find the probability that the patent is… • Foreign • A US patent or Individual • A Foreign patent, given it was issued to a corporation • Issued to a Corporation, given it was a US patent • A Government patent, given it was issued in a Foreign country.

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