Answered: In a study examining the effect of…

Name: In a study examining the effect of alcohol on reaction time, Liguori a
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Description: In a study examining the effect of alcohol on reaction time, Liguori and Robinson (2001) found that even moderate alcohol consumption significantly slowed response time in a driving simulation. In a similar study, researchers measured the reaction ti

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 examining the effect of alcohol on reaction time, Liguori and Robinson (2001) found that even moderate alcohol consumption significantly slowed response time in a driving simulation. In a similar study, researchers measured the reaction time of a sample of n = 25 participants 30 minutes after drinking a 6-ounce glass of wine which ended up with a mean of = 422 millisecond. On the standardized driving simulation task, the population scores are normally distributed with a mean of µ = 400 millisecond with a standard deviation of σ = 40. Using an α = .05, conduct a hypothesis test to determine whether these data are sufficient to conclude that the alcohol significantly increased reaction time?

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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