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Finger Tapping and Caffeine The effects of caffeine on the body have been extensively studied. In one experiment, researchers examined whether caffeine increases the rate at which people are able to tap their fingers. Twenty students were randomly divided into two groups of 10 students each, with one group receiving caffeinated coffee and one group receiving decaffeinated coffee. The study was double-blind, and after a 2-hour period, each student was tested to measure finger tapping rate (taps per minute). The goal of the experiment was to determine whether caffeine produces an increase in the average tap rate. The finger-tapping rates measured in this experiment are stored in Caffeine Taps. A distribution of differences in means, I. - , for randomization samples from this experiment is given in the figure below. Let group 1 be the people who have had coffee with caffeine and let group 2 be the people who have had coffee without caffeine. 120 100 - 80- 60- 40 20 0.4 0.4 1.2 2.0 2.8 3.6 3.6 1.6 0.8 0.0 0.8 1.6 2.4 3.2 Difference Frequency

Finger Tapping and Caffeine The effects of caffeine on the body have been extensively studied. In one experiment, researchers examined whether caffeine increases the rate at which people are able to tap their fingers. Twenty students were randomly divided into two groups of 10 students each, with one group receiving caffeinated coffee and one group receiving decaffeinated coffee. The study was double-blind, and after a 2-hour period, each student was tested to measure finger tapping rate (taps per minute). The goal of the experiment was to determine whether caffeine produces an increase in the average tap rate. The finger-tapping rates measured in this experiment are stored in Caffeine Taps. A distribution of differences in means, I. - , for randomization samples from this experiment is given in the figure below. Let group 1 be the people who have had coffee with caffeine and let group 2 be the people who have had coffee without caffeine. 120 100 - 80- 60- 40 20 0.4 0.4 1.2 2.0 2.8 3.6 3.6 1.6 0.8 0.0 0.8 1.6 2.4 3.2 Difference Frequency

MATLAB: An Introduction with Applications
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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Finger Tapping and Caffeine The effects of caffeine on the body have been extensively studied. In one experiment1, researchers examined whether caffeine increases the rate at which people are able to tap their fingers. Twenty students were randomly divided into two groups of 10 students each, with one group receiving caffeinated coffee and one group receiving decaffeinated coffee. The study was double-blind, and after a 2-hour period, each student was tested to measure finger tapping rate (taps per minute). The goal of the experiment was to determine whether caffeine produces an increase in the average tap rate. The finger-tapping rates measured in this experiment are stored in CaffeineTaps. A distribution of differences in means, I, - I,, for randomization samples from this experiment is given in the figure below. Let group 1 be the people who have had coffee with caffeine and let group 2 be the people who have had coffee without caffeine. 120 100 80- 60- 40 20 - 0. -3.6 3.6 3.2 2.0 -1.6 -1.2 0.4 0.4 1.2 2.0 2.8 3.2 2.8 2.4 0.8 0.0 0.8 1.6 2.4 Difference 1 Type here to search hp Frequency
Transcribed Image Text:Finger Tapping and Caffeine The effects of caffeine on the body have been extensively studied. In one experiment1, researchers examined whether caffeine increases the rate at which people are able to tap their fingers. Twenty students were randomly divided into two groups of 10 students each, with one group receiving caffeinated coffee and one group receiving decaffeinated coffee. The study was double-blind, and after a 2-hour period, each student was tested to measure finger tapping rate (taps per minute). The goal of the experiment was to determine whether caffeine produces an increase in the average tap rate. The finger-tapping rates measured in this experiment are stored in CaffeineTaps. A distribution of differences in means, I, - I,, for randomization samples from this experiment is given in the figure below. Let group 1 be the people who have had coffee with caffeine and let group 2 be the people who have had coffee without caffeine. 120 100 80- 60- 40 20 - 0. -3.6 3.6 3.2 2.0 -1.6 -1.2 0.4 0.4 1.2 2.0 2.8 3.2 2.8 2.4 0.8 0.0 0.8 1.6 2.4 Difference 1 Type here to search hp Frequency
(b) Which of the following values is closest to the p-value for a difference in average sample tap rates of - X2 = 1.8? %3D O 0.55 0.04 O 0.13 O 0.70 eTextbook and Media Hint (c) Which of the following values is closest to the p-value for a difference in average sample tap rates of X - 2 = 2.3? O 0.04 O 0.13 O 0.55 O 0.70 Type here to search hp
Transcribed Image Text:(b) Which of the following values is closest to the p-value for a difference in average sample tap rates of - X2 = 1.8? %3D O 0.55 0.04 O 0.13 O 0.70 eTextbook and Media Hint (c) Which of the following values is closest to the p-value for a difference in average sample tap rates of X - 2 = 2.3? O 0.04 O 0.13 O 0.55 O 0.70 Type here to search hp
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