With infinite sample sizes, t ratios of +1.96
A) include only the middle-most 68% of all t values
B) include only the middle-most 50% of all t values
C) include only the middle-most 5% of all t values
D) exclude only the most extreme 5% of all t values

Question

Quizplus · Accepted Answer

With infinite sample sizes, the t-distribution approaches the normal distribution. A t ratio of +1.96 corresponds to the 97.5th percentile, meaning it excludes the most extreme 5% of all values (2.5% on each tail of the distribution), not just the middle-most percentages.

With Infinite Sample Sizes, T Ratios of +1.96