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 $\mathrm { n } = 25 , \overline { \mathrm { x } } = 19 , \mathrm {~s} = 3$ , and $\alpha = 0.005$ if $\mathrm { H } _ { 1 } : \mu > 18$ . Round your answer to three decimal places.

A) $1.667$
B) $1.997$
C) $1.452$
D) $1.239$