Question

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 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 cm. An analysis of the sample data revealed that the hippocampal volume is approximately normal with no outliers and x bar=8.12 cm and s= 0.7 cm. Conduct the appropriate test at the 0.01 level of significance. Identify the P-Value and whether or not the null needs to be rejected or accepted.

Answer 1

P value = 0.00

As p value < alpha

We reject the null hypothesis.

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