For large samples, use of the normal curve rather than the t distribution typically results in
A) larger confidence intervals.
B) significantly more computations on the part of the researcher.
C) no difference in the width of the confidence intervals.
D) smaller confidence intervals.
E) b and c above.

Question

Quizplus · Accepted Answer

For large samples, the normal distribution is used because the sample mean distribution approaches normality due to the Central Limit Theorem, resulting in smaller confidence intervals compared to using the t distribution, which accounts for more variability in smaller samples.

For Large Samples, Use of the Normal Curve Rather Than