Probability and Statistics Quiz
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Questions and Answers

What is a possible value of X for the difference between the number of heads and tails when a coin is tossed 6 times?

  • 8
  • 7
  • 4 (correct)
  • 3 (correct)

    • In the scenario of drawing two balls from an urn containing 5 red and 2 black balls, what are the possible values of X, the number of black balls drawn?

  • 3
  • 4
  • 2 (correct)
  • 5

    • Which of the following sets is not a probability mass function (PMF)?

  • P(X) where P(0) = 0.1, P(1) = 0.5, P(2) = 0.2, P(3) = -0.1, P(4) = 0.2 (correct)
  • P(X) where P(0) = 0.4, P(1) = 0.4, P(2) = 0.2
  • P(Z) where P(3) = 0.3, P(2) = 0.2, P(1) = 0.4, P(0) = 0, P(-1) = 0.05
  • P(X) where P(0) = 0.1, P(1) = 0.6, P(2) = 0.3

    • From the following, which option denotes a valid probability mass function?

    <p>P(X) where P(0) = 0.4, P(1) = 0.4, P(2) = 0.2</p> Signup and view all the answers

    Which condition must a function meet to be classified as a probability mass function?

    <p>The sum of probabilities must equal 1.</p> Signup and view all the answers

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