1. The main campus at Penn State University has a population of approximately 42,000 students. A research question is "what proportion of Penn State students have smoked marijuana in the past year?" A survey was administered to 987 randomly selected Penn State students. Forty-three percent (43%) of those students reported that they had smoked marijuana in the past year.

• What is the population?

42,000 students

• What is the sample?
• What variable is being measured?
• Identify one parameter and one statistic in this scenario.
  • Parameter: p = the true proportion of Penn State students who smoke regularly.
  • Statistic: p-hat = 0.43

2. Determine what variable is being measured, and classify each as Nominal, Ordinal, Interval, or Ratio. Discuss the reason for each.

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