20. According to data from the 1993 Substance Abuse and Mental Health Administration na- tional household survey on drug abuse, for Americans aged 26-34, 59% had used mari- Juana at least once in their lifetime, and 26% had used cocaine at least once

a) Find the odds of having used marijuana. Interpret

b) Find the odds of having used cocaine. Interpret

c) Find the odds ratio comparing marijuana use to cocaine use (i.e., this odds ratio refeas to the 22 table having rows (marijuana. cocaine) and columns (used at least once, never used) Interpret.