A carpenter is making doors that are 2058 millimeters tall. If the doors are too long they must be trimmed, and if they are too short they cannot be used. A sample of 11 doors is taken, and it is found that they have a mean of 2070 millimeters with a variance of 400 . Assume the population is normally distributed. Is there evidence at the 0.05 level that the doors are too long and need to be trimmed? Step 6 of 6 : Make the decision to reject or fall to reject the null hypothesis. Answer 2 Points O Faill to Reject Null Hypothesis

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

Josie is organizing her ribbons for a craft project. The list shows the length of each of her ribbons. \( 21.5 \mathrm{~cm}, 12.4 \mathrm{~cm}, 30.4 \mathrm{~cm}, 15.3 \mathrm{~cm}, 10.7 \mathrm{~cm}, 7.9 \mathrm{~cm}, 14.6 \mathrm{~cm}, 11.2 \mathrm{~cm} \) What is the median ribbon length? A. 12.4 cm B. 13.0 cm C. 13.5 cm D. 14.6 cm E. 15.5 cm

11) Na distribuição de valores iguais, o Desvio padrão é: 12) \( \begin{array}{llll}\text { a) ( ) negativo } & \text { c) ( ) zero } & \text { b) ( ) a unidade } & \text { d) ( ) positivo }\end{array} \)

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?

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 \( 13 \% \)