me the results sis relatively
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:26 - Section 6.5 Paired Difference in Means
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Use a t-distribution and the given matched pair sample results to complete the test of the given hypotheses. Assume the results
come from random samples, and if the sample sizes are small, assume the underlying distribution of the differences is relatively
normal. Assume that differences are computed using d = x1 – x2.
Test Ho : Ha = 0 vs Ha : Ha > Ousing the paired data in the following table:
Situation 1
130
156
135
175
153
148
180
135
168
157
Situation 2
120
135
142
150
155
148
160
142
162
150
Give the test statistic and the p-value.
Round your answer for the test statistic to two decimal places and your answer for the p-value to three decimal places.
test statistic =
i
p-value =
i
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Give the conclusion using a 5 % significance level.
O Reject Ho.
O Do not reject Ho.
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Transcribed Image Text:26 - Section 6.5 Paired Difference in Means
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A data collection method is described to investigate a difference in means. Determine which data analysis method is more
appropriate: paired data difference in means or difference in means with two separate groups.
To measure the effectiveness of a new teaching method for math in elementary school, each student in a class getting the new
instructional method is matched with a student in a separate class on IQ, family income, math ability level the previous year, reading
level, and all demographic characteristics. At the end of the year, math ability levels are measured again.
O Paired data difference in means
O Difference in means with two separate groups
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