A Study Conducted by the National Center for Health Statistics

Multiple Choice

A study conducted by the National Center for Health Statistics as part of the Center for Disease Control and Prevention (CDC) found that, as of 2015-2016, 39.6% of Americans over the age of 20 fit the medical definition of being obese (BMI of 30 or higher) . A city known for its plentiful outdoor opportunities believes that number is lower among its residents. A representative sample of 80 city residents is collected and the BMI calculated for each (based on reported height and weight) . The variable of interest is whether the resident fit the medical definition of obese. The study found 22 people in the sample fit the medical definition of obese.
-Once more, let 'A' represent your answer from 60. How should the p-value be calculated for this test? Select all that apply.

A) Find the area below the standardized statistic on the Standard Normal distribution.
B) Find the area below 0.275 on a Normal distribution centered at the null value with standard deviation
C) Find the proportion of samples at or below 0.275 on a simulated null distribution.
D) Find the area below A on a Standard Normal distribution.