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9. For questions 9.1-9.5, refer to the following problem. A fitness trainer developed a set of breathing exercises aimed to improve one' speed. To test these new exercises, this trainer randomly selected 12 from his regular clients and asked to run a total distance of 2 km. The next day, he asked the same respondents to undergo his breathing exercises and run a total distance of 2 km afterwards. He recorded the total time (in minutes) of his 12 clients from both runs (data given in the table below). At 1% level of significance, is there sufficient evidence to conclude that these new breathing exercises enhance one's speed? 9.1. Which type of sampling was used? Independent Related First Run 13.72 8.75 9.35 4.37 6.52 9.33 7.53 8.21 11.25 15.65 8.46 6.74 Second Run 8.69 6.21 9.01 4.52 4.27 7.21 4.92 6.89 10.57 10.83 7.82 5.62

9. For questions 9.1-9.5, refer to the following problem. A fitness trainer developed a set of breathing exercises aimed to improve one' speed. To test these new exercises, this trainer randomly selected 12 from his regular clients and asked to run a total distance of 2 km. The next day, he asked the same respondents to undergo his breathing exercises and run a total distance of 2 km afterwards. He recorded the total time (in minutes) of his 12 clients from both runs (data given in the table below). At 1% level of significance, is there sufficient evidence to conclude that these new breathing exercises enhance one's speed? 9.1. Which type of sampling was used? Independent Related First Run 13.72 8.75 9.35 4.37 6.52 9.33 7.53 8.21 11.25 15.65 8.46 6.74 Second Run 8.69 6.21 9.01 4.52 4.27 7.21 4.92 6.89 10.57 10.83 7.82 5.62

College Algebra (MindTap Course List)
College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter4: Polynomial And Rational Functions
Section4.6: Rational Functions
Problem 11SC: Find the mean hourly cost when the cell phone described above is used for 240 minutes.
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9. For questions 9.1-9.5, refer to the following problem. A fitness trainer developed a set of breathing exercises aimed to improve one's speed. To test these new exercises, this trainer randomly selected 12 from his regular clients and asked to run a total distance of 2 km. The next day, he asked the same respondents to undergo his breathing exercises and run a total distance of 2 km afterwards. He recorded the total time (in minutes) of his 12 clients from both runs (data given in the table below). At 1% level of significance, is there sufficient evidence to conclude that these new breathing exercises enhance one's speed? 9.1. Which type of sampling was used? Independent Related First Run 13.72 8.75 9.35 4.37 6.52 9.33 7.53 8.21 11.25 15.65 8.46 6.74 Second Run 8.69 6.21 9.01 4.52 4.27 7.21 4.92 6.89 10.57 10.83 7.82 5.62
Transcribed Image Text:9. For questions 9.1-9.5, refer to the following problem. A fitness trainer developed a set of breathing exercises aimed to improve one's speed. To test these new exercises, this trainer randomly selected 12 from his regular clients and asked to run a total distance of 2 km. The next day, he asked the same respondents to undergo his breathing exercises and run a total distance of 2 km afterwards. He recorded the total time (in minutes) of his 12 clients from both runs (data given in the table below). At 1% level of significance, is there sufficient evidence to conclude that these new breathing exercises enhance one's speed? 9.1. Which type of sampling was used? Independent Related First Run 13.72 8.75 9.35 4.37 6.52 9.33 7.53 8.21 11.25 15.65 8.46 6.74 Second Run 8.69 6.21 9.01 4.52 4.27 7.21 4.92 6.89 10.57 10.83 7.82 5.62
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