Say whether each of the numbers in parentheses is a paramter or statistic. Pleas

Question

Say whether each of the numbers in parentheses is a paramter or statistic. Please show work and explain.

a. A data set based on 168 hopsital discharge summaries shows that (20%) of patients were uninsured. (The reveiw takes place in a large referral hospital.

b. Data from a standard metropolitian area indicate that (12%) of the inhabitants are African American. A telephone survey that was based on a random-digit-dialing machine found that (8%) of respondents were African American.

c. Data from 10 online pharmacies reveal that the average cost of a 1-month supply of a particular medication is ($31.20) with a standard deviation of ($7.75). Data from 10 community pharmacies shows an average cost of ($33.18) with a standard deviation of ($7.88).

Explanation / Answer

a. statistic since it is from a sample. b. parameter since it is from a population; statistic because it is from a sample c. all statistics because they are based on samples.

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