Find $\chi _ { \text {left } } ^ { 2 }$

Multiple Choice

Find $\chi _ { \text {left } } ^ { 2 }$ and $\chi _ { \text {right } } ^ { 2 }$ for a $90 \%$ confidence interval using the chi-square distribution with 15 degrees of freedom.

A) 7.790, 21.064
B) 8.547, 22.307
C) 6.571, 23.685
D) 7.261, 24.996