Compute the Standardized Test Statistic $\chi ^ { 2 }$ To Test the Claim

Multiple Choice

Compute the standardized test statistic, $\chi ^ { 2 }$ to test the claim $\sigma ^ { 2 } \geq 7.2 \text { if } n = 15 , \mathrm {~s} ^ { 2 } = 6 , \text { and } \alpha = 0.05$

A) 11.667
B) 8.713
C) 12.823
D) 23.891