binomial_distribution
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| binomial_distribution [2019/11/04 15:13] – hkimscil | binomial_distribution [2020/11/27 19:37] – hkimscil | ||
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| \end{eqnarray*} | \end{eqnarray*} | ||
| + | A balanced dice is rolled 3 times. What is probability a 5 comes up exactly twice? | ||
| + | |||
| + | p = 1/6 | ||
| + | n = 3 | ||
| + | x = 2 | ||
| + | |||
| + | \begin{eqnarray*} | ||
| + | P(X=2) & = & {{3} \choose {2}} \left(\frac{1}{6}\right)^{2} \left(\frac{5}{6}\right)^{3-2} \\ | ||
| + | & = & 0.0694 | ||
| + | \end{eqnarray*} | ||
| + | |||
| + | < | ||
| + | > dbinom(2, 3, 1/6) | ||
| + | [1] 0.06944444 | ||
| + | > | ||
| + | </ | ||
binomial_distribution.txt · Last modified: 2020/11/27 19:42 by hkimscil