1. Se pesó a 20 niños que cursan el kínder con los siguientes resultados. Considerando que se trata de una población normalmente distribuida y aplicando el método de verosimilitud estime la media poblacional y la varianza poblacional. \( \begin{array}{llllllllllllllllll}15 & 18 & 20 & 21 & 17 & 15 & 19 & 18 & 18 & 20 & 22 & 21 & 16 & 19 & 18 & 19 & 20 & 21 \\ 20 & 17\end{array} \)

Bila diberikan sebuah sebaran normal dengan \( \mu=40 \) dan \( \sigma=6 \), hitunglah: a. Luas daerah di bawah 32 b. Luas daerah di atas 27 c. Luas daerah di antara 42 dan 51 d. Nilai x yang luas daerah di bawahnya \( 45 \% \) e. Nilai \( x \) yang luas daerah di atasnya \( 13 \% \)

09) O Desvio Padrão de um conjunto de dados é 9. A variância é: \( \begin{array}{llll}\text { 10) } \\ \begin{array}{lll}\text { a) ( ) } 3 & \text { c) ( ) } 81 & \text { b) ( ) } 36\end{array}\end{array} \)

Here are the test scores of a class of learners: \( 100,100,99,98,92,91,91,90,88,87,87,85,85,85,80,79,76,72,67,66,45 \) a) What is the average score (mean) of the class for this test?

Use this set of numbers to answer the question. \( \begin{array}{l}4,11,6,9,23,34,6,19 \\ \text { What is the median for this set of numbers? } \\ \text { A. } 6 \\ \text { B. } 10 \\ \text { D. } 14 \\ \text { D. } 16\end{array} \)

e) In order to get a better idea of how a given data point relates to other data, it is important to get an idea of how spread out the data are. One way of doing this is by using the range. The range is the distance between the highest and lowest data points in a set. What is the 'range' of the scores for this test?