TABLE 8-11
A university wanted to find out the percentage of students who felt comfortable reporting cheating by their fellow students. A survey of 2,800 students was conducted and the students were asked if they felt comfortable reporting cheating by their fellow students. The results were 1,344 answered "Yes" and 1,456 answered "No."
-Referring to Table 8-11, a 90% confidence interval calculated from the same data would be narrower than a 99% confidence interval.

Question

Quizplus · Accepted Answer

As the confidence level increases, the margin of error also increases, which leads to a wider confidence interval. Therefore, a 90% confidence interval would be narrower than a 99% confidence interval as it has a smaller margin of error.

TABLE 8-11 A University Wanted to Find Out the Percentage of Students