4 Point Problem 7) Explain the meaning of the slope and \( y \)-intercept of the line of best fit in terms of the context. a. The vintercept means: b. The slope means:

Find the mean of: \( 1.8,1.7,1.3,1.1,1.2,1.6,1.8 \) A. 1.6 B. 1.4 C. 1.8 D. 1.1 E. 1.5

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?

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?

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 \( 13 \% \)

\( \left. \begin{array} { l } { 5,5,8,3,12,10,18,15,12,16,20,18,20,20,24,26,25,28,25,30 } \\ { \qquad \overline { x } = 17.15 } \end{array} \right. \)