In astudy, researchers wanted to measure the effect of alcohol on the hippocampalregion, the portion of the brain responsible forlong-term memorystorage, in adolescents. The researchers randomly selected 24

24 adolescents with alcohol use disorders to determine whether the hippocampal volumes in the alcoholic adolescents were less than the normal volume of 9.02

9.02 cm cubed

cm3. An analysis of the sample data revealed that the hippocampal volume is approximately normal with x overbar

xequals

=8.17

8.17 cm cubed

cm3 and sequals

=0.8

0.8 cm cubed

cm3. Conduct the appropriate test at the alpha

=0.01 level of significance.

dentify thet-statistic.

t 0

t0equals

=

nothing

(Round to two decimal places asneeded.)

Identify theP-value.

P-valueequals

=

nothing

(Round to three decimal places asneeded.)