Relaxing after work:The 2010 General Social Survey asked the question, "After an average work day, about how many hours do you have to relax or pursue activities that you enjoy?" to a random sample of 1,155 Americans. The average relaxing time was found to be 1.65 hours. Determine which of the following is an observation, a variable, a sample statistic, or a population parameter.

a) An American in the sample.

• observation
• sample statistic
• population parameter
• variable

b) Number of hours spent relaxing after an average work day.

• sample statistic
• variable
• population parameter
• observation

c) 1.65.

• observation
• sample statistic
• population parameter
• variable

d) Average number of hours all Americans spend relaxing after an average work day.

• sample statistic
• population parameter
• observation
• variable

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Question 7