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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?
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?
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 $p$?
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?
Which of the following statements about the normal distribution is true?
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In a probability distribution, what does the variance measure?
In a probability distribution, what does the variance measure?
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