Schmidt Norris
11/14/2024 · Senior High School
En un colegio están midiendo la cantidad de inasistencia diaria a un curso de 45 alumnos, sea \( x \) una variable aleatoria que indica cuántos alumnos han faltado en un dia. A continuación se presenta la función de cuantia: \( P(X=x)=\left\{\begin{array}{l}\frac{(x+1)}{145} \\ \frac{(x+2)^{2}}{145} \\ 0.20\end{array} \quad x=0,1,2\right. \) Determine la dispersión lineal de alumnos que faltan un día.
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La dispersión lineal de alumnos que faltan un día es \( \frac{13636}{21025} \).
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