3. Two teaching methods and their effects on science test scores are being reviewed. A group of students is taught in traditional lab sessions. A second group of students is taught using interactive simulation software. The science test scores for the two groups are shown in the back-to-back stem-and-leaf plot. At a = 0.05, can you support the claim that the mean science test score is lower for students taught using the traditional lab method than it is for students taught using the interactive simulation software? First assume the population variances are equal. Note that you are also expected to identify the claim and state H0 and Ha а. b. find the critical value(s) and identify the rejection region(s), c. find the standardized test statistic Sketch a graph decide whether to reject or fail to reject the null hypothesis, and d. interpret the decision in the context of the original claim. e. Obtain a 95%confidence interval Traditional Lab Interactive Simulation Software Key: 0|9 90 (traditional) 9|1 = 91 (interactive) 4 6. 99887663210 7. 0455778 98511100 8. 003478899 20 9. 139

MATLAB: An Introduction with Applications
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3. Two teaching methods and their effects on science test scores are being reviewed. A
group of students is taught in traditional lab sessions. A second group of students is
taught using interactive simulation software. The science test scores for the two groups
are shown in the back-to-back stem-and-leaf plot. At a = 0.05, can you support the claim
that the mean science test score is lower for students taught using the traditional lab
method than it is for students taught using the interactive simulation software? First
assume the population variances are equal. Note that you are also expected to
identify the claim and state H0 and Ha
а.
b. find the critical value(s) and identify the rejection region(s),
c. find the standardized test statistic Sketch a graph decide whether to reject or
fail to reject the null hypothesis, and
d. interpret the decision in the context of the original claim.
e. Obtain a 95%confidence interval
Traditional Lab
Interactive Simulation Software
Key:
0|9 90 (traditional)
9|1 = 91 (interactive)
4
6.
99887663210
7.
0455778
98511100
8.
003478899
20
9.
139
Transcribed Image Text:3. Two teaching methods and their effects on science test scores are being reviewed. A group of students is taught in traditional lab sessions. A second group of students is taught using interactive simulation software. The science test scores for the two groups are shown in the back-to-back stem-and-leaf plot. At a = 0.05, can you support the claim that the mean science test score is lower for students taught using the traditional lab method than it is for students taught using the interactive simulation software? First assume the population variances are equal. Note that you are also expected to identify the claim and state H0 and Ha а. b. find the critical value(s) and identify the rejection region(s), c. find the standardized test statistic Sketch a graph decide whether to reject or fail to reject the null hypothesis, and d. interpret the decision in the context of the original claim. e. Obtain a 95%confidence interval Traditional Lab Interactive Simulation Software Key: 0|9 90 (traditional) 9|1 = 91 (interactive) 4 6. 99887663210 7. 0455778 98511100 8. 003478899 20 9. 139
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