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For each of the following, state whether the quantity described is a parameter or a statistic,...

  1. For each of the following, state whether the quantity described is a parameter or a statistic, and give the correct notation. (please include notation in the answer!!)

a. Proportion of students at a university that are part-time, based on data on all students enrolled at the university.

b. Correlation between age and heart rate for patients admitted to an Intensive Care Unit, based on a sample of 200 patients.

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Answer #1

a) The quantity is a parameter because it is based on all students. The correct notation is population proportion (p).

b) The quantity is a statistic because it is based on sample. The correct notation is sample correlation coefficient (r).

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