The result of placing a larger sample variance in the numerator of the test statistic allows us to
A) focus only on the right tail of the distribution.
B) arrive at a more accurate statistic value.
C) focus only on the left tail of the distribution.
D) determine if the distribution is symmetric.

Question

The result of placing a larger sample variance in the numerator of the  test statistic allows us to
A) focus only on the right tail of the distribution. 
B) arrive at a more accurate statistic value. 
C) focus only on the left tail of the distribution. 
D) determine if the distribution is symmetric.

Quizplus · Accepted Answer

Placing a larger sample variance in the numerator of the test statistic increases its value, which shifts the distribution to the right. Therefore, we can focus on the right tail of the distribution and determine if the observed difference is statistically significant at a certain level of significance.

The Result of Placing a Larger Sample Variance in the Numerator