Mathematics, 09.06.2021 02:50 Kylabayor
Suppose I have an urn with 9 balls: 4 green, 3 yellow and 2 white ones. I draw a ball from the urn repeatedly with replacement. (a) Suppose I draw n times. Let X., be the number of times I saw a green ball followed by a yellow ball. Calculate the expectation Ex, (b) Let y be the number of times I drew a green ball before the first white draw. Calculate E[Y]. Can you give an intuitive explanation for your answer
Answers: 2
![E(y)=[E(w)-1]\frac{4}{9}](/tpl/images/1367/8299/da554.png)
![E(y)=[\frac{9}{2}-1]\frac{4}{9}](/tpl/images/1367/8299/d5883.png)
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Suppose I have an urn with 9 balls: 4 green, 3 yellow and 2 white ones. I draw a ball from the urn r...
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