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Identify the two samples as either independent or dependent. 1. Two samples comparing pre and post semester scores for students in a class 2. A sample of air quality measurements taken in the spring and a sample of air quality measurements taken in the fall. 3. A survey comparing couples political beliefs 4. Sample exam means comparing two different classes 5. Before and after comparison of 500 meter run times, when comparing two different exercise programs

Identify the two samples as either independent or dependent. 1. Two samples comparing pre and post semester scores for students in a class 2. A sample of air quality measurements taken in the spring and a sample of air quality measurements taken in the fall. 3. A survey comparing couples political beliefs 4. Sample exam means comparing two different classes 5. Before and after comparison of 500 meter run times, when comparing two different exercise programs

MATLAB: An Introduction with Applications
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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Identify the two samples as either independent or dependent. 1. Two samples comparing pre and post semester scores for students in a class 2. A sample of air quality measurements taken in the spring and a sample of air quality measurements taken in the fall. 3. A survey comparing couples political beliefs 4. Sample exam means comparing two different classes 5. Before and after comparison of 500 meter run times, when comparing two different exercise programs Write the null and alternative hypothesis for each claim. Remember to use the difference notation D. 1. A statistics instructor claims his teaching can improve your exam scores 2. Using before and after rounds of golf, a coach claims that she can improve your golf game Listed below are heights in inches of fathers and their first sons. 72 73 Father Son Difference 1. Complete the table and find the differences 2. Use a 5% level of significance to test the claim there is no difference in heights between fathers and first sons. Before After 66 68 6.6 6.8 69 6.5 2.4 68 A study was conducted to investigate the effectiveness of hypnotism in reducing pain. Sample Data Sample Data 9.0 70 71 7.4 92 95 70 70 10.3 8.5 1. Test the claim that hypnotism reduced pain. Use a 5% level of significance. 2. Construct the 90% confidence interval for the reduction in pain by hypnotism 11.3 70 8.1 77 75 70 Before 70 80 99 76 After 75 93 99 86 1. Find Test the claim that the writing course improved scores. Use a 10% level of significance 2. Construct the 95% confidence interval for the difference between the before and after scores 8.1 70 71 6.1 A test of writing ability was given to a random sample of students before and after completing a formal writing course. Sample Data 75 71 85 95 6.3 3.4 83 88 68 70 11.6 2.0 71 79
Transcribed Image Text:Identify the two samples as either independent or dependent. 1. Two samples comparing pre and post semester scores for students in a class 2. A sample of air quality measurements taken in the spring and a sample of air quality measurements taken in the fall. 3. A survey comparing couples political beliefs 4. Sample exam means comparing two different classes 5. Before and after comparison of 500 meter run times, when comparing two different exercise programs Write the null and alternative hypothesis for each claim. Remember to use the difference notation D. 1. A statistics instructor claims his teaching can improve your exam scores 2. Using before and after rounds of golf, a coach claims that she can improve your golf game Listed below are heights in inches of fathers and their first sons. 72 73 Father Son Difference 1. Complete the table and find the differences 2. Use a 5% level of significance to test the claim there is no difference in heights between fathers and first sons. Before After 66 68 6.6 6.8 69 6.5 2.4 68 A study was conducted to investigate the effectiveness of hypnotism in reducing pain. Sample Data Sample Data 9.0 70 71 7.4 92 95 70 70 10.3 8.5 1. Test the claim that hypnotism reduced pain. Use a 5% level of significance. 2. Construct the 90% confidence interval for the reduction in pain by hypnotism 11.3 70 8.1 77 75 70 Before 70 80 99 76 After 75 93 99 86 1. Find Test the claim that the writing course improved scores. Use a 10% level of significance 2. Construct the 95% confidence interval for the difference between the before and after scores 8.1 70 71 6.1 A test of writing ability was given to a random sample of students before and after completing a formal writing course. Sample Data 75 71 85 95 6.3 3.4 83 88 68 70 11.6 2.0 71 79
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