Data has been collected from a representative sample of a well-defined population to answer the question: How much money does the average senior male at Normal Community High School have in his pockets at the end of the school day on Friday? The next step in the study is to:

A. determine the margin of error.

B. summarize the data with a sample statistic.

C. use the collected data to make inferences about the population.

D. summarize the data with a sample parameter.