Question

four scenarios of statistical studies are given below. decide which study uses a sample statistic1. the average finish time for the ironman, kona was 11:32 for the 1883 finishers, with an average swim time of 1:14, an average bike time of 5:53, and an average run time of 4:142. an estimated 15% of americans don’t use the internet 3. parkland hospital performs 15,000 births a year. of 1,000 subjects in a study on multiple births, 38 gave birth to twins 4. a poll of the entire student body found that 32% of students at wilson abner college voted in the last presidential election

Answer 1

A statistical sample (or a sample) is a subset of elements of the statistical population. A statistical sample will represent the totality of subjects. Therefore, the study that uses a sample statistic is:

Parkland hospital performs 15,000 births a year. of 1,000 subjects in a study on multiple births, 38 gave birth to twins, because it uses a sample of 1000 subjects out of a total population of 15000.

Answer: 3. parkland hospital performs 15,000 births a year. of 1,000 subjects in a study on multiple births, 38 gave birth to twins