Test Hypotheses About a Population Mean with Unknown
-Find the Standardized

Multiple Choice

Test Hypotheses about a Population Mean with Unknown
-Find the standardized test statistic $t$ for a sample with $\mathrm { n } = 15 , \overline { \mathrm { x } } = 10.8 , \mathrm {~s} = 0.8$ , and $\alpha = 0.05$ if $\mathrm { H } _ { 0 } : \mu \leq 10.5$ . Round your answer to three decimal places.

A) $1.452$
B) $1.728$
C) $1.631$
D) $1.312$