Which of the following is a factor that influences interval width?
A)confidence level
B)sample size n
C)variation in the population as measured by $\sigma$
D)all of the above
E)none of the above

Question

Quizplus · Accepted Answer

All of the choices listed influence the width of a confidence interval. A higher confidence level increases the interval width, a larger sample size decreases the interval width, and greater variation in the population increases the interval width.

Which of the Following Is a Factor That Influences Interval σ\sigmaσ

Which of the Following Is a Factor That Influences Interval $\sigma$