Probability and Distribution Quiz
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Questions and Answers

In a binomial distribution, the mean is equal to the product of the number of trials and the probability of success. What is the correct formula for the mean of a binomial distribution?

  • $rac{p}{n}$
  • $n - p$
  • $np$ (correct)
  • $rac{n}{p}$

    • In the context of probability distributions, what does the term 'moment' refer to?

  • The expected value of the distribution
  • The measure of the shape of the distribution (correct)
  • The probability of an event occurring
  • The variance of the distribution

    • What is the standard deviation of a binomial distribution with parameters $n$ and $p$?

  • $rac{rac{p(1-p)}{n}}{n}$
  • $rac{p}{n}$
  • $rac{n(1-p)}{p}$ (correct)
  • $rac{rac{np(1-p)}{n}}{n}$

    • Which of the following statements about the normal distribution is true?

    <p>It is symmetric about its mean</p> Signup and view all the answers

    In a probability distribution, what does the variance measure?

    <p>The spread of the distribution</p> Signup and view all the answers

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