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?Reaction Time Researchers wanted to assess the effect of low alcohol consumption on reaction time in seniors, believing that even low levels of alcoho

Statistics: Informed Decisions Using Data | 5th Edition | ISBN: 9780134133539 | Authors: Michael Sullivan III ISBN: 9780134133539 240

Solution for problem 32 Chapter 1

Statistics: Informed Decisions Using Data | 5th Edition

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Statistics: Informed Decisions Using Data | 5th Edition | ISBN: 9780134133539 | Authors: Michael Sullivan III

Statistics: Informed Decisions Using Data | 5th Edition

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Problem 32

Reaction Time Researchers wanted to assess the effect of low alcohol consumption on reaction time in seniors, believing that even low levels of alcohol consumption can impair the ability to walk, thereby increasing the likelihood of falling. They identified 13 healthy seniors who were not heavy consumers of alcohol. The experiment took place in late afternoon. Each subject was instructed to have a light lunch and not to drink any caffeinated drinks in the 4 hours prior to arriving at the lab. The seniors were asked to walk on a treadmill on which an obstacle would appear randomly. The reaction time was measured by determining the time it took the senior to lift his or her foot upon the appearance of the obstacle. First, each senior walked the treadmill after consuming a drink consisting of water mixed with orange juice with the scent and taste of vodka. The senior was then asked to drink two additional drinks (40% vodka mixed with orange juice). The senior then walked on the treadmill again. The average response time increased by 19 milliseconds after the alcohol treatment. The researchers concluded that response times are significantly delayed even for low levels of alcohol consumption.

Source: Judith Hegeman et al. “Even Low Alcohol Concentrations Affect Obstacle Avoidance Reactions in Healthy Senior Individuals,” BMC Research Notes 3:243, 2010.

(a) What type of experimental design is this?

(b) What is the response variable in this experiment? Is it quantitative or qualitative?

(c) What is the treatment?

(d) What factors were controlled and set at a fixed level in this experiment?

(e) Can you think of any factors that may affect reaction to alcohol that were not controlled?

(f) Why do you think the researchers used a drink that had the scent and taste of vodka to serve as the treatment for a baseline measure?

(g) What was the conclusion of the study? To whom does this conclusion apply?

Step-by-Step Solution:

Step 1 of 5) Reaction Time Researchers wanted to assess the effect of low alcohol consumption on reaction time in seniors, believing that even low levels of alcohol consumption can impair the ability to walk, thereby increasing the likelihood of falling. They identified 13 healthy seniors who were not heavy consumers of alcohol. The experiment took place in the late afternoon. Each subject was instructed to have a light lunch and not to drink any caffeinated drinks in the 4 hours prior to arriving at the lab. The seniors were asked to walk on a treadmill on which an obstacle would appear randomly. The reaction time was measured by determining the time it took the senior to lift his or her foot upon the appearance of the obstacle. First, each senior walked the treadmill after consuming a drink consisting of water mixed with orange juice with the scent and taste of vodka. The senior was then asked to drink two additional drinks (40% vodka mixed with orange juice). The senior then walked on the treadmill again. The average response time increased by 19 milliseconds after the alcohol treatment. The researchers concluded that response times are significantly delayed even for low levels of alcohol consumption. Source: Judith Hegeman et al. “Even Low Alcohol Concentrations Affect Obstacle Avoidance Reactions in Healthy Senior Individuals,” BMC Research Notes 3:243, 2010. (a) What type of experimental design is this (b) What is the response variable in this experiment Is it quantitative or qualitative (c) What is the treatment (d) What factors were controlled and set at a fixed

Step 2 of 1

Chapter 1, Problem 32 is Solved
Textbook: Statistics: Informed Decisions Using Data
Edition: 5
Author: Michael Sullivan III
ISBN: 9780134133539

Statistics: Informed Decisions Using Data was written by and is associated to the ISBN: 9780134133539. This textbook survival guide was created for the textbook: Statistics: Informed Decisions Using Data, edition: 5. The answer to “?Reaction Time Researchers wanted to assess the effect of low alcohol consumption on reaction time in seniors, believing that even low levels of alcohol consumption can impair the ability to walk, thereby increasing the likelihood of falling. They identified 13 healthy seniors who were not heavy consumers of alcohol. The experiment took place in late afternoon. Each subject was instructed to have a light lunch and not to drink any caffeinated drinks in the 4 hours prior to arriving at the lab. The seniors were asked to walk on a treadmill on which an obstacle would appear randomly. The reaction time was measured by determining the time it took the senior to lift his or her foot upon the appearance of the obstacle. First, each senior walked the treadmill after consuming a drink consisting of water mixed with orange juice with the scent and taste of vodka. The senior was then asked to drink two additional drinks (40% vodka mixed with orange juice). The senior then walked on the treadmill again. The average response time increased by 19 milliseconds after the alcohol treatment. The researchers concluded that response times are significantly delayed even for low levels of alcohol consumption.Source: Judith Hegeman et al. “Even Low Alcohol Concentrations Affect Obstacle Avoidance Reactions in Healthy Senior Individuals,” BMC Research Notes 3:243, 2010.(a) What type of experimental design is this?(b) What is the response variable in this experiment? Is it quantitative or qualitative?(c) What is the treatment?(d) What factors were controlled and set at a fixed level in this experiment?(e) Can you think of any factors that may affect reaction to alcohol that were not controlled?(f) Why do you think the researchers used a drink that had the scent and taste of vodka to serve as the treatment for a baseline measure?(g) What was the conclusion of the study? To whom does this conclusion apply?” is broken down into a number of easy to follow steps, and 312 words. Since the solution to 32 from 1 chapter was answered, more than 213 students have viewed the full step-by-step answer. This full solution covers the following key subjects: . This expansive textbook survival guide covers 88 chapters, and 2422 solutions. The full step-by-step solution to problem: 32 from chapter: 1 was answered by , our top Statistics solution expert on 01/15/18, 03:19PM.

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