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. Country Czech Rep. Denmark England Finland Ireland Italy No. Ireland Norway Portugal Scotland United States Percent Who Have Used Other Drugs 4 3 Marijuana 22 17 40 5 37 19 23 6 7 53 34 21 1 16 8 14 3 3 31 24 i) Create a scatterplot, by hand. ii) Write a brief description of the association seen from the scatterplot. iii) Calculate the mean percent of teens who have used marijuana and the mean percent who have used other drugs?

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. Country Czech Rep. Denmark England Finland Ireland Italy No. Ireland Norway Portugal Scotland United States Percent Who Have Used Other Drugs 4 3 Marijuana 22 17 40 5 37 19 23 6 7 53 34 21 1 16 8 14 3 3 31 24 i) Create a scatterplot, by hand. ii) Write a brief description of the association seen from the scatterplot. iii) Calculate the mean percent of teens who have used marijuana and the mean percent who have used other drugs?

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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