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60. Drug abuse revisițed Chapter 6, Exercise 42 examines results of a survey conducted in the United States and 10 countries of Western Europe to determine the percentage'of teenagers who had used marijuana and other drugs. Below is the scatterplot. Summary statistics showed that the mean percent that had used marijuana was 23.9%, with a standard deviation of 15.6%. An average of 11.6% of teens had used other drugs, with a standard deviation of 10.2%. 30.0 + A 22.5 + 15.0 7.5 + 12.5 25.0 37.5 50.0 Marijuana (%) 63. В be a) Do you think a linear model is appropriate? Explain. He h) For thio p2 in 87 3 Intornrat thic ctotictio in thic Other Drugs (%)

60. Drug abuse revisițed Chapter 6, Exercise 42 examines results of a survey conducted in the United States and 10 countries of Western Europe to determine the percentage'of teenagers who had used marijuana and other drugs. Below is the scatterplot. Summary statistics showed that the mean percent that had used marijuana was 23.9%, with a standard deviation of 15.6%. An average of 11.6% of teens had used other drugs, with a standard deviation of 10.2%. 30.0 + A 22.5 + 15.0 7.5 + 12.5 25.0 37.5 50.0 Marijuana (%) 63. В be a) Do you think a linear model is appropriate? Explain. He h) For thio p2 in 87 3 Intornrat thic ctotictio in thic Other Drugs (%)

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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60. Drug abuse revisițed Chapter 6, Exercise 42 examines results of a survey conducted in the United States and 10 countries of Western Europe to determine the percentage'of teenagers who had used marijuana and other drugs. Below is the scatterplot. Summary statistics showed that the mean percent that had used marijuana was 23.9%, with a standard deviation of 15.6%. An average of 11.6% of teens had used other drugs, with a standard deviation of 10.2%. 30.0 + 22.5 + a 15.0 7.5 + c) 12.5 25.0 37.5 50.0 Marijuana (%) 63. Burg betwe a) Do you think a linear model is appropriate? Explain. b) For this regression, R is 87.3%. Interpret this statistic in this Here a Other Drugs (%)
Transcribed Image Text:60. Drug abuse revisițed Chapter 6, Exercise 42 examines results of a survey conducted in the United States and 10 countries of Western Europe to determine the percentage'of teenagers who had used marijuana and other drugs. Below is the scatterplot. Summary statistics showed that the mean percent that had used marijuana was 23.9%, with a standard deviation of 15.6%. An average of 11.6% of teens had used other drugs, with a standard deviation of 10.2%. 30.0 + 22.5 + a 15.0 7.5 + c) 12.5 25.0 37.5 50.0 Marijuana (%) 63. Burg betwe a) Do you think a linear model is appropriate? Explain. b) For this regression, R is 87.3%. Interpret this statistic in this Here a Other Drugs (%)
7.5 12.5 25.0 37.5 50.0 Marijuana (%) 63 a) Do you think a linear model is appropriate? Explain. b) For this regression, R is 87.3%. Interpret this statistic in this context. c) Write the equation you would use to estimate the percentage of teens who use other drugs from the percentage who have used marijuana. d) Explain in context what the slope of this line means. e) Do these results confirm that marijuana is a "gateway drug," that is, that marijuana use leads to the use of other drugs? 61. More used cars 2014 Use the advertised prices for Toyota Corollas given in Exercise 59 to create a linear model for the re- e OCT étv 4 280 MacBook Pro
Transcribed Image Text:7.5 12.5 25.0 37.5 50.0 Marijuana (%) 63 a) Do you think a linear model is appropriate? Explain. b) For this regression, R is 87.3%. Interpret this statistic in this context. c) Write the equation you would use to estimate the percentage of teens who use other drugs from the percentage who have used marijuana. d) Explain in context what the slope of this line means. e) Do these results confirm that marijuana is a "gateway drug," that is, that marijuana use leads to the use of other drugs? 61. More used cars 2014 Use the advertised prices for Toyota Corollas given in Exercise 59 to create a linear model for the re- e OCT étv 4 280 MacBook Pro
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