### Study on the Effect of Alcohol on the Hippocampal VolumeIn a study, researchers aimed to assess how alcohol consumption affects the hippocampal region, the brain area responsible for long-term memory storage in adolescents. The study involved randomly selecting 14 adolescents with alcohol use disorders to determine if their hippocampal volumes were less than the standard volume of 9.02 cm³.**Sample Analysis:**- The mean hippocampal volume from the sample: \( \bar{x} = 8.09 \, \text{cm}^3 \)- Standard deviation: \( s = 0.8 \, \text{cm}^3 \)**Hypothesis Testing:**- Null Hypothesis (\( H_0 \)): \( \mu = 9.02 \)- Alternative Hypothesis (\( H_1 \)): \( \mu < 9.02 \)The statistical test is conducted at a \( \alpha = 0.01 \) level of significance.**Calculation Details:**- **T-Statistic:** - Calculated as \( t_0 = -4.35 \) (rounded to two decimal places)- **P-Value:** - To be determined (round to three decimal places)This analysis is instrumental in understanding whether alcohol use significantly affects brain structure in adolescents, specifically targeting potential reductions in hippocampal volume.

Answered: Image /qna-images/answer/add8035f-bf63-449c-8c3e-2b03bc07351d.jpg

Answered: The researchers randomly selected 14…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The Walting ulme (in minutes) was measured for a random sample of patients with non-life threatening injuries in emergency rooms at four local hospitals who arrived between 2:00 and 3:00pm on a particular Saturday. The results of the ANOVA and the plot of the residuals follow: Analysis of Variance Source Adj MS 169.63 35.12 DF Adj ss F-Value 4.83 P-Value Factor 3. 508.9 0.007 Error 31 1088.7 Total 34 1597.6 Means Factor stDev 4.59 3.99 мean 13.11 14.29 6. B 16.00 7.12 D 10 22.60 6.82 Histogram of Residuals 15 20 10 1s Residuals Using the information in the outputs, is there evidence that the distribution of observations is normal in each hospital's population? O No O Yes Percent 790
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The M&Ms milk chocolate color distribution is the following: 25% blue, 35% orange, 23% red, and 17% brown. In a bag, I found 160 blue M&Ms, 224 orange ones, 169 red ones and 99 brown ones.I am wondering whether my bag of M&Ms is representative of the manufacturer's claim. Calculate the absolute value of the test statistic. number (rtol=0.01, atol=D0.0001) Calculate the absolute value of the test statistic that would correspond to a = 0.05. number (rtol=0.01, atol=D0.0001) Using a level of significance of a = 0.05, do the M&Ms in the bag match the required color distribution? State your decision. O (a) Reject HO O (b) Cannot Reject HO
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