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A Sample of Eight People Attended a Two Day CourseA) Compute the Test Statistic
B) Can You Conclude That

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Question 28
Multiple Choice
arrowQuestion 28arrow
Multiple Choice

A sample of eight people attended a two day course that prepares students for college admission testing. The students were given a pretest before the course and a posttest after the course. The results were as as follows
 Student 12345678 Pretest 5978656266677777 Posttest 7280776573509069\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 α=0.10\alpha = 0.10 level of significance.


A) a) S=12\mathrm { S } = 12
b) We can not conclude that the median of the pretests and postests are different.
B) a) S=12\mathrm { S } = 12
b) We can conclude that the median of the pretests and postests are different.
C) a) S=11S = 11
b) We can conclude that the median of the pretests and postests are different.
D) a) S=11\mathrm { S } = 11
b) We can not conclude that the median of the pretests and postests are different.

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