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(a) Campus squirrels weigh 20% more than squirrels living in the woods.
(b) Less than half of all registered voters in Orange County are democrats.
(c) Most people who own a yacht make more than $100,000 per year.

Note that a statistic is a numerical measure that is normally used to describe the distribution of the sample data, while a parameter is used to describe the whole population. When the information given presents a clue that all the members of the population have been used in the study, then the parameter might be the thing of interest that is being tested. 


a. statistic because the squirrels in the campus are a sample of the population.

b.  Parameter, The population consists of all registered voters. 

c. Statistics, the selection of the people is a sample of the population. 

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