Probability and Statistics Quiz
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Questions and Answers

What is the probability of drawing one white ball and one black ball in that order, when two balls are drawn from a bag containing 7 white and 9 black balls with replacement?

  • 0.19 (correct)
  • 0.5
  • 0.36
  • 0.25

    • What is the probability of rolling an even number when a die is thrown once?

  • 1/3
  • 2/3
  • 1/2 (correct)
  • 1/6

    • If the mean of a binomial distribution is 3 and the variance is 1.5, what is the probability of at least four successes?

  • 0.10
  • 0.32
  • 0.05 (correct)
  • 0.22

    • What are the correct null and alternative hypotheses in hypothesis testing?

    <p>Null: X = 0; Alternative: X ≠ 0</p> Signup and view all the answers

    What is the value of a in the given probability distribution if the total probability must equal 1?

    <p>1/45</p> Signup and view all the answers

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