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Quiz 9 Question 2
Quiz 9
2. In a study, researchers 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 adolescents with alcohol use disorders to determine whether the hippocampal volumes in the alcoholic adolescents were less than the normal volume of . An analysis of the sample data revealed that the hippocampal volume is approximately normal with no outliers and and s . Conduct the appropriate test at the level of significance.
State the null and alternative hypotheses.
Identify the t-statistic.
Identify the P-value.
Make a conclusion regarding the hypothesis. _____ the null hypothesis. There _____
sufficient evidence to claim that the mean hippocampal volume is _____ ___.