Question

Based on some screening tests, a medical researcher reports that 22% of her adult subjects have high levels of blood glucose, a warning sign for diabetes. She says her study has a margin of error of +7%. What can you conclude about all adults?

a. 15% to 29% of adults have high blood glucose
b. Exactly 22% of adults have high blood glucose
c. More than 29% of adults have high blood glucose
d. Less than 15% of adults have high blood glucose

Answer 1

Based on a medical researcher's findings with a margin of error of ±7%, we can conclude that 15% to 29% of all adults may have high blood glucose levels, a warning sign for diabetes. option b

Step-by-step explanation:

When a medical researcher reports a finding that 22% of her adult subjects have high levels of blood glucose with a margin of error of +7%, it means that the true percentage of all adults with high blood glucose is likely to be within 7 percentage points above or below 22%. Therefore, the range would be from 15% to 29% (22% - 7% = 15% and 22% + 7% = 29%). This range represents the level of uncertainty in the estimate due to the sample size and other factors influencing the screening test results. It's important for individuals to be aware of this as high blood glucose levels are a warning sign for diabetes, which can lead to serious health complications such as heart attacks, strokes, and kidney failure.