$\begin{array}{l|cccccccc}\text { Student } & 1 & 2 & 3 & 4 & 5 & 6 & 7 & 8 \\\hline \text { Pretest } & 59 & 78 & 65 & 62 & 66 & 67 & 77 & 77 \\\text { Posttest } & 72 & 80 & 77 & 65 & 73 & 50 & 90 & 69\end{array}$

a) Compute the test statistic

b) Can you conclude that the median scores differ between the pretest and postest? Use the $\alpha = 0.10$ level of significance.

A) a) $\mathrm { S } = 12$

b) We can not conclude that the median of the pretests and postests are different.

B) a) $\mathrm { S } = 12$

b) We can conclude that the median of the pretests and postests are different.

C) a) $S = 11$

b) We can conclude that the median of the pretests and postests are different.

D) a) $\mathrm { S } = 11$

b) We can not conclude that the median of the pretests and postests are different.

Choose question tag

10+ million students use Quizplus to study and prepare for their homework, quizzes and exams through 20m+ questions in 300k quizzes.

Explore our library and get Introductory Statistics Homework Help with various study sets and a huge amount of quizzes and questions

Get Free Access Now!

Textbook Solutions

Find all the solutions to your textbooks, reveal answers you would’t find elsewhere

Search By Image

Scan any paper and upload it to find exam solutions and many more