A statistics teacher wants to know how her students feel about an introductory statistics course. She decides to administer a survey to a random sample of students taking the course. She has several sampling plans to choose from.
Full Answer
What is sample statistic?
Sample statistic. The value is a numerical measurement describing a characteristic of a sample.
Why is the study an observational study?
The study is an observational study because the researchers only observe values of the subjects and do not apply any treatments. Researchers want to investigate whether taking aspirin regularly reduces the risk of heart attack. Four hundred men between the ages of 50 and 84 are recruited as participants.
What is population parameter?
Population Parameter. The value is a numerical measurement describing a characteristic of a population.
What is the population of interest?
I. The population of interest is all U.S. teens.
Is each student equally likely to be chosen?
Yes, because each student is equally likely to be chosen. Identify the sampling method that best describe the situation below. A small town has 250 residents who live in a central region, 150 in an eastern, 50 in the northern, 115 in the southern, and 300 in the western.
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