2 Se toman al azar 5 cursos de una Escuela y en cada uno de ellos se obtiene la varianza de las edades. 5 las sigulentes alternativas corresponden a esas varianzas. ¿Cuall de ellas evidencia un curso con edades más homogéneas?

Indira makes a box-and-whisker plot of her data. She finds that the distance from the minimum value to the first quartile is greater than the distance between the third quartile and the maximum value. Which is most likely true? The mean is greater than the median because the data is skewed to the right. The mean is greater than the median because the data is skewed to the left. The mean is less than the median because the data is skewed to the right. The mean is less than the median because the data is skewed to the left.

El triple del sigurente de hit es igual a so quinti disminuido en siere unidades

Si \( A \) es divisor de \( B \) y \( B \) es a su vez divisor de \( C \), enronces, ¡es posible que \( A \) sea divisor de \( C \) Si \( A \) es divisor de \( B \), ¿es posible que \( B \) sea divisor de \( A \) ?

(i) Shade, on a suitable sketch, the region with an area given by \( \int_{-1}^{2}\left(9-x^{2}\right) \mathrm{d} x \). (ii) Find the area of (iv).

b) A bag contains 20 balls all identical except for colour. There are 3 green balls, 5 red balls and 12 brown balls. One ball is picked at random from the bag, its colour noted and is replaced. A second ball is picked at random and its colour noted and is replaced. Calculate the probability that both balls are of the same colour.