## Practice Final B12 |
bsmith |
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Does anyone know how to do this problem? i dont even know where to begin |

Lilyhui: March 19, 2015, 5:29 p.m. |
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You can draw a horizontal line, the left endpoint is 0 and the right endpoint is 3. The prob of landing on the left of 1 on the line is 1/3 ( this would be your probability) and you throw the marble 9 times (this is n ). E[X] =np which is 9 x(1/3) =3 |

bsmith: March 19, 2015, 9:19 p.m. |
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thank u lily hui <3 |