Mathematics, 11.11.2020 17:30, matthewdabber7
Find the expected value and the variance of the number of times one must throw a die until the outcome 1 has occurred 5 times.
Answers: 2
![Var[X]=\frac{r(1-p)}{p^{2}}](/tpl/images/0887/9188/cf291.png)
![Var[X]=\frac{5(1-1/6)}{(1/6)^{2}}](/tpl/images/0887/9188/a7298.png)
![Var[X]=5.\frac{5}{6}.6^{2}](/tpl/images/0887/9188/c0a81.png)
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Find the expected value and the variance of the number of times one must throw a die until the outco...
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