In a study, researchers wanted to measure the effect of alcohol on the hippocampal region, the portion of the brain responsible for long-term memorstorage, in adolescents. The researchers randomly selected 13 adolescents with alcohol use disorders to determine whether the hippocampalvolumes in the alcoholic adolescents were less than the normal volume of 9.02 cm°. An analysis of the sample data revealed that the hippocampalvolume is approximately normal with no outliers and x = 8.13 cm° and s = 0.7 cm°. Conduct the appropriate test at the a = 0.01 level of significance.State the null and alternative hypotheses.Ho: HH1: H(Type integers or decimals. Do not round.)Identify the t-statistic.to(Round to two decimal places as needed.)%3DIdentify the P-value.P-value =(Round to three decimal places as needed.)Make a conclusion regarding the hypothesis.V the null hypothesis. Theresufficient evidence to claim that the mean hippocampal volume is| cm³.

From the given information we conduct the t test.

Answered: study, researchers wanted to measure…

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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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 11 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= 8.09 cm and s =0.7 cm. Conduct the appropriate test at the a0.01 level of significance. State the null and alternative hypotheses. Ho: v H;: (Type integers or decimals. Do not round.)
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 13 adolescents with alcohol use disorders to determine whether the hippocampal volumes in the alcoholic adolescents were less than the normal volume of 9.02 cm3. An analysis of the sample data revealed that the hippocampal volume is approximately normal with no outliers and x = 8.01 cm and s = 0.8 cm³. Conduct the appropriate test at the a = 0.01 level of significance. State the null and alternative hypotheses. Ho: H H:H (Type integers or decimals. Do not round.) Identify the t-statistic. to = (Round to two decimal places as needed.) %3D Identify the P-value. P-value =(Round to three decimal places as needed.) Make a conclusion regarding the hypothesis. V the null hypothesis. There V sufficient evidence to claim that the mean hippocampal volume is cm3.
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 26 adolescents with alcohol use disorders to determine whether the hippocampal volumes in the alcoholic adolescents were less than the normal volume of 8.87 cm³. An analysis of the sample data revealed that the hippocampal volume is approximately normal with no outliers and x = 8.09 cm³ and s= 0.8 cm³. Conduct the appropriate test at the α = 0.10 level of significance. Click the icon to view the table of critical t-values. State the null and alternative hypotheses. Ho: μ 8.87 cm³ 3 Η: μ < 8.87 cm cm³ (Type integers or decimals. Do not round.) Identify the t-statistic. to = 4.97 (Round to two decimal places as needed.) Approximate the P-value. = The P-value is in the range P-value <0.01. Make a conclusion regarding the hypothesis. the null hypothesis. There (Type an integer or a…
Low‑density lipoprotein, or LDL, is the main source of cholesterol buildup and blockage in the arteries. This is why LDL is known as "bad cholesterol." LDL is measured in milligrams per deciliter of blood, or mg/dL. In a population of adults at risk for cardiovascular problems, the distribution of LDL levels is normal, with a mean of 123123 mg/dL and a standard deviation of 4141 mg/dL. If an individual's LDL is at least 11 standard deviation or more above the mean, he or she will be monitored carefully by a doctor. What percentage of individuals from this population will have LDL levels 11 or more standard deviations above the mean? Use the 6868–9595–99.799.7 rule. (Enter your exact answer as a whole number.)
Researcher wanted to determine if carpeted rooms containe more bacteria than uncarpted rooms. Colonies of bacteria were allowed to form in the 16 Petri dishes. A normal probality plot and boxplot indicate that the data are aproximately normally distributed with no outliers. Do carpted rooms have more bacteria than uncarpted roomz at the a= 0.05 level of signicance? carpeted rooms (bacteria/cubic foot) 11.8, 8.2, 7.1, 13, 10.8, 10.1 14.6, 14 uncarpted room( bacteria/cubic foot) 12.1, 8.3, 3.8, 7.2, 12, 11.1 10.1 13.7 a) Is this independent or dependent sampling? b) State the null and alternative hypotheses c) P-value: d) state your conclusion in the langauage of the problem.
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 26 adolescents with alcohol use disorders to determine whether the hippocampal volumes in the alcoholic adolescents were less than the normal volume of 9.19 cm³. An analysis of the sample data revealed that the hippocampal volume is approximately normal with no outliers and x = 8.46 cm³ and s=0.8 cm³. Conduct the appropriate test at the a=0.05 level of significance. Click the icon to view the table of critical t-values. State the null and alternative hypotheses. Ho H cm` H₁ ▼ cm³ (Type integers or decimals. Do not round.) Identify the t-statistic. to= (Round to two decimal places as needed.) Approximate the P-value. The P-value is in the range Make a conclusion regarding the hypothesis. the null hypothesis. There (Type an integer or a decimal. Do not round.) 8:4 sufficient evidence…
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 15 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= 8.01 cm and s= 0.7 cm. Conduct the appropriate test at the a = 0.01 level of significance. ..... State the null and alternative hypotheses. Họ: H H1: u (Type integers or decimals. Do not round.)
Low-density lipoprotein, or LDL, is the main source of cholesterol buildup and blockage in the arteries. This is why LDL is known as "bad cholesterol." LDL is measured in milligrams per deciliter of blood, or mg/dL. In a population of adults at risk for cardiovascular problems, the distribution of LDL levels is normal, with a mean of 123 mg/dL and a standard deviation of 41 mg/dL. If an individual's LDL is at least 1 standard deviation or more above the mean, he or she will be monitored carefully by a doctor. What percentage of individuals from this population will have LDL levels 1 or more standard deviations above the mean? Use the 68–95–99.7 rule. (Enter your exact answer as a whole number.) percentage %

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