(Choose 1 answer)
The grade point averages for 10 randomly selected students in a statistics class with 125 students are listed below.
2.0 3.2 1.8 2.9 0.9 4.0 3.3 2.9 3.6 0.8
What is the effect on the width of the confidence interval if the sample size is increased to 20?
A. The width decreases.
B. It is impossible to tell without more information.
C. The width increases.
D. The width remains the same.
