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) 1.812
B) 1.960
C) 2.228
D) 2.201

Question

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)  1.812 
B)  1.960 
C)  2.228 
D)  2.201

Quizplus · Accepted Answer

For a 95% confidence interval with a sample size of 11, the degrees of freedom (df) is 10 (since df = n - 1). Looking up the critical value for a two-tailed test with df = 10 in a t-distribution table or using a calculator for the 95% confidence level, the critical value is approximately 2.228.

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

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