Find the critical value $t _ { \alpha / 2 }$ needed to construct a confidence interval of the given level with the given sample size.
Level $95 \%$, sample size 11
A) 1.960
B) 2.228
C) 1.812
D) 2.201

Question

Quizplus · Accepted Answer

The critical value $t _ { \alpha / 2 }$ for a 95% confidence interval with a sample size of 11 (degrees of freedom = 10) is found using a t-distribution table or calculator. For 10 degrees of freedom, the critical value is approximately 2.228.

Find the Critical Value tα/2t _ { \alpha / 2 }tα/2​

Find the Critical Value $t _ { \alpha / 2 }$