Drug use among college students in the United States was particularly heavy during the 1970s. Reporting on a study of drinking and drug use among college students in the United States in 1994, a Newsweek reporter wrote: Why should college students be so impervious to the lesson of the morning after? Efforts to discourage them from using drugs actually did work. The proportion of college students who smoked marijuana at least once in 30 days went from one in three in 1980 to one in seven last year [1993]; cocaine users dropped from 7 percent to 0.7 percent over the same period.† (a) What was the relative risk of cocaine use for college students in 1980 compared with college students in 1993? Write your answer as a statement that could be understood by someone who does not know anything about statistics. A student in 1980 was 10 Correct: Your answer is correct. times Correct: Your answer is correct. to use cocaine as one in 1993. (b) Rewrite the proportion given for college students in 1980 who smoked marijuana at least once as odds. (Enter the odds as a ratio using two numbers.) Incorrect: Your answer is incorrect. Rewrite the proportion given for college students in 1993 who smoked marijuana at least once as odds. (Enter the odds as a ratio using two numbers.) Incorrect: Your answer is incorrect.