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Determine whether the given piece of information is most likely a parameter or a statistic. Ie. Determine if the quoted value came from population or sample data.
(a) The average GPA for the graduating class of State College was 2.87.
(b) 8 out 10 Vermont teenagers do not smoke.
(c) In a sample of 100 students the average GPA was 2.87.
(d) According to the U.S. Bureau of Labor and Statistics, the U.S. unemployment rate for January
2011, was 9.2%