In a shudy, researchere wanted to measure the effect of alcohol on the hippocampal region, the portion of the brain responsible for long-term memory storage, in adolescents. The researchers randomly selected 13 adolescerts with aicohol use disorders to determine whether the hippocampal volumes in the alcoholic adolescents were less than the normal volume of 0.02 cm An analysis of the sample data revealed that the hippocampal volume is approvimately normal with no outiers and x8.01 cm and s00 cm. Conduct the appropriate test at the a001 level of significance State the nut and alternative hypotheses Ho H (Type integers or decimals. Do not round.) Identity the t-statistic. 6- (Round to two decimal places as needed.) Identily the P.value. Pvalue (Round to three decimal places as needed.) Make a conclusion regarding the hypothesis. Fail to reject the nul hypothesis. There is suficient evidence to claim that the mean hippocampal volume is cm less than