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

Multiple Choice

Compute the standardized test statistic, $x ^ { 2 }$ to test the claim $\sigma ^ { 2 } < 50.4 \text { if } n = 28 , s ^ { 2 } = 31.5 , \text { and } \alpha = 0.10 \text {. }$

A) 16.875
B) 14.324
C) 18.132
D) 21.478