Homework Help is Here – Start Your Trial Now!
Math
Statistics
Drug use 2013 The 2013 World Drug Report investi- gated the prevalence of drug use as a percentage of the population aged 15 to 64. Data from 32 European countries are shown in the following scatterplot and regression analysis. (Source: World Drug Report, 2013. www.unodc.org/unodc/en/data-and-analysis/ WDR-2013.html) 3.00 E 2.25+ 1.50 0.75 12 Cannabis (%) esponse variable is Cocaine -squared = 25.8% 0.7076 with 32 - 2 = 30 degrees of freedom ariable Coefficient SE(Coeff) t-Ratio P-Value tercept 0.296899 0.2627 1.13 0.2673 anabis 0.123638 0.0382 3.23 0.0030 ) Explain in context what the regression says. ) State the hypothesis about the slope (both numeri- cally and in words) that describes how use of cannabis (marijuana) is associated with other drugs. ) Assuming that the assumptions for inference are satisfied, perform the hypothesis test and state your conclusion in context. ) Explain what R-squared means in context. ) Do these results indicate that marijuana use leads to the use of harder drugs? Explain. Cocaine (%)

Drug use 2013 The 2013 World Drug Report investi- gated the prevalence of drug use as a percentage of the population aged 15 to 64. Data from 32 European countries are shown in the following scatterplot and regression analysis. (Source: World Drug Report, 2013. www.unodc.org/unodc/en/data-and-analysis/ WDR-2013.html) 3.00 E 2.25+ 1.50 0.75 12 Cannabis (%) esponse variable is Cocaine -squared = 25.8% 0.7076 with 32 - 2 = 30 degrees of freedom ariable Coefficient SE(Coeff) t-Ratio P-Value tercept 0.296899 0.2627 1.13 0.2673 anabis 0.123638 0.0382 3.23 0.0030 ) Explain in context what the regression says. ) State the hypothesis about the slope (both numeri- cally and in words) that describes how use of cannabis (marijuana) is associated with other drugs. ) Assuming that the assumptions for inference are satisfied, perform the hypothesis test and state your conclusion in context. ) Explain what R-squared means in context. ) Do these results indicate that marijuana use leads to the use of harder drugs? Explain. Cocaine (%)

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
See similar textbooks
icon
Related questions
Question
22. Drug use 2013 The 2013 World Drug Report investi- gated the prevalence of drug use as a percentage of the population aged 15 to 64. Data from 32 European countries are shown in the following scatterplot and regression analysis. (Source: World Drug Report, 2013. www.unodc.org/unodc/en/data-and-analysis/ WDR-2013.html) 3.00 E 2.25 1.50 0.75 12 Cannabis (%) Response variable is Cocaine R-squared = 25.8% s - 0.7076 with 32 - 2 = 30 degrees of freedom Variable Coefficient SE(Coeff) -Ratio P-Value Intercept 0.296899 0.2627 1.13 0.2673 Canabis 0.123638 0.0382 3.23 0.0030 a) Explain in context what the regression says. b) State the hypothesis about the slope (both numeri- cally and in words) that describes how use of cannabis (marijuana) is associated with other drugs. c) Assuming that the assumptions for inference are satisfied, perform the hypothesis test and state your conclusion in context. d) Explain what R-squared means in context. e) Do these results indicate that marijuana use leads to the use of harder drugs? Explain. Cocaine (%)
Transcribed Image Text:22. Drug use 2013 The 2013 World Drug Report investi- gated the prevalence of drug use as a percentage of the population aged 15 to 64. Data from 32 European countries are shown in the following scatterplot and regression analysis. (Source: World Drug Report, 2013. www.unodc.org/unodc/en/data-and-analysis/ WDR-2013.html) 3.00 E 2.25 1.50 0.75 12 Cannabis (%) Response variable is Cocaine R-squared = 25.8% s - 0.7076 with 32 - 2 = 30 degrees of freedom Variable Coefficient SE(Coeff) -Ratio P-Value Intercept 0.296899 0.2627 1.13 0.2673 Canabis 0.123638 0.0382 3.23 0.0030 a) Explain in context what the regression says. b) State the hypothesis about the slope (both numeri- cally and in words) that describes how use of cannabis (marijuana) is associated with other drugs. c) Assuming that the assumptions for inference are satisfied, perform the hypothesis test and state your conclusion in context. d) Explain what R-squared means in context. e) Do these results indicate that marijuana use leads to the use of harder drugs? Explain. Cocaine (%)
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Similar questions
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman
SEE MORE TEXTBOOKS