An adviser is testing out a new online learning module for a placement test. They wish to test the Ho: of no pre/post difference vs. Ha: that the new online learning module changed placement scores at a significance level of a = 0.05. For the context of this problem, µa = µpost – Hpre where the first data set represents the after (post) test scores and the second data set represents before (pre) test scores. Assume the population is normally distributed. H.: Hd = 0 Ha: Ha + 0 You obtain the following paired sample of 8 students that took the placement test before and after the learning module: After Before 55.1 57.7 -17.5 50.5 6.8 62 26.2 65.3 37.9 54.2 21.7 55.9 8.6 53.5 49.9 55.5 What is the critical value for this test? Round answers to 2 decimal places. critical value = ± Shade the sampling distribution curve with the correct critical value(s) and shade the critical regions. The arrows can only be dragged to t scores that are accurate to 1 place after the decimal point (these values correspond to the tick marks on the horizontal axis). Select from the drop down menu to shade to the left, to the right, between or left and right of the t-score(s). Shade: Left of a value Click and drag the arrows to adjust the values. -4 -3 -2 -1 3 4
An adviser is testing out a new online learning module for a placement test. They wish to test the Ho: of no pre/post difference vs. Ha: that the new online learning module changed placement scores at a significance level of a = 0.05. For the context of this problem, µa = µpost – Hpre where the first data set represents the after (post) test scores and the second data set represents before (pre) test scores. Assume the population is normally distributed. H.: Hd = 0 Ha: Ha + 0 You obtain the following paired sample of 8 students that took the placement test before and after the learning module: After Before 55.1 57.7 -17.5 50.5 6.8 62 26.2 65.3 37.9 54.2 21.7 55.9 8.6 53.5 49.9 55.5 What is the critical value for this test? Round answers to 2 decimal places. critical value = ± Shade the sampling distribution curve with the correct critical value(s) and shade the critical regions. The arrows can only be dragged to t scores that are accurate to 1 place after the decimal point (these values correspond to the tick marks on the horizontal axis). Select from the drop down menu to shade to the left, to the right, between or left and right of the t-score(s). Shade: Left of a value Click and drag the arrows to adjust the values. -4 -3 -2 -1 3 4
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:Question 7
>
An adviser is testing out a new online learning module for a placement test. They wish to test the Ho: of no
pre/post difference vs. Ha: that the new online learning module changed placement scores at a
significance level of a =
set represents the after (post) test scores and the second data set represents before (pre) test
scores. Assume the population is normally distributed.
0.05. For the context of this problem, µa = lpost
Hlpre where the first data
H.: Pd
Ha: Hd + 0
You obtain the following paired sample of 8 students that took the placement test before and after the
learning module:
After
Before
55.1
57.7
-17.5
50.5
6.8
62
26.2
65.3
37.9
54.2
21.7
55.9
8.6
53.5
49.9
55.5
What is the critical value for this test? Round answers to 2 decimal places.
critical value = ±
%3D
Shade the sampling distribution curve with the correct critical value(s) and shade the critical regions. The
arrows can only be dragged to t scores that are accurate to 1 place after the decimal point (these values
correspond to the tick marks on the horizontal axis). Select from the drop down menu to shade to the left,
to the right, between or left and right of the t-score(s).
Shade: Left of a value
Click and drag the arrows to adjust the values.
-4
-3
-2
-1
3
-1 5
2.
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