Test the Claim That$\sigma ^ { 2 }

Question

Test the Claim That$\sigma ^ { 2 } < 50.4 \text { if } n = 28 , s ^ { 2 } = 31.5 , \text { and } \alpha = 0.10$

Examlex · Accepted Answer

The Answer is critical values

\chi _ { L } ^ { 2 }

=1.735 and

x _ { \mathrm { R } } ^ { 2 }

=23.589 ; standardized test statistic

x ^ { 2 } \approx

9.926 ; fail to reject H₀ ; There is not sufficient evidence to support the claim.

Test the Claim That $\sigma ^ { 2 } < 50.4 \text { if } n = 28 , s ^ { 2 } = 31.5 , \text { and } \alpha = 0.10$