Percent Who Have Used Country Marijuana Other Drugs Czech Rep. 22 Denmark 17 3 England 40 21 Finland 5 Ireland 37 Italy 19 No. Ireland 23 Norway 6 Portugal 7 Scotland 53 United States 34 24 a) Create a scatterplot. b) What is the correlation between the percent of teens who have used marijuana and the percent who have used other drugs? c) Write a brief description of the association. d) Do these results confirm that marijuana is a "gateway drug," that is, that marijuana use leads to the use of other drugs? Explain.42. Drug abuse A survey was conducted in the United States and 10 countries of Western Europe to determine the percentage of teenagers who had used marijuana and other drugs. The results are summarized in the following table