Maurice Tutor

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    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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    Phoniex University
    Oct-2001 - Nov-2016

Category > Computer Science Posted 20 Jul 2017 My Price 6.00

European School Study

Drug use. The European School Study Project on Alcohol and Other Drugs, published in 1995, investigated the use of marijuana and other drugs. Data from 11 countries are summarized in the following scatterplot and regression analysis. They show the association between the percentage of a country’s ninth graders who report having smoked marijuana and who have used other drugs such as LSD, amphetamines, and cocaine.

 

a) Explain in context what the regression says.

b) State the hypothesis about the slope (both numerically and in words) that describes how use of 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.

Answers

Maurice Tutor
(5)
Status NEW Posted 20 Jul 2017 09:07 PM My Price 6.00

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