9.24 Hygiene of handshakes, high five and fist bumps. HealthDprofessionals warn that transmission of infectious diseasesHANDSHK may occur during the traditional handshake greeting. Twoalternative methods of greeting (popularized in sports) arethe "high five" and the "fist bump." Researchers comparedthe hygiene of these alternative greetings in a designed studyand reported the results in the American Journal of InfectionControl (Aug. 2014). A sterile-gloved hand was dipped intoa culture of bacteria, then made contact for three secondswith another sterile-gloved hand via either a handshake, highfive, or fist bump. The researchers then counted the num-ber of bacteria present on the second, recipient, gloved hand.This experiment was replicated five times for each contactmethod. Simulated data (recorded as a percentage relative tothe mean of the handshake), based on information providedby the journal article, are provided in the table.Handshake:High five:Fist bump:131441574 70 141296921964329925321a. The researchers reported that “[more] bacteria weretransferred during a handshake compared with a highfive." Use a 95% confidence interval to support thisstatement statistically. b. The researchers also reported that "the fist bump ...gave [a lower] transmission of bacteria" than the highfive. Use a 95% confidence interval to support thisstatement statistically.c. Based on the results, parts a and b, which greetingmethod would you recommend as having the most hy-giene?

Given: The mean of Hygiene of handshakes, high five and fist bumps, Handshake 131 74 129 96 92…

Hygiene of handshakes, high five and fist bumps. Health professionals warn that transmission of infectious diseases may occur during the traditional handshake greeting. Two alternative methods of greeting (popularized in sports) are the "high five" and the "fist bump." Researchers comparec the hygiene of these alternative greetings in a designed study and reported the results in the American Journal of Infection Control (Aug. 2014). A sterile-gloved hand was dipped into a culture of bacteria, then made contact for three seconds with another sterile-gloved hand via either a handshake, high five, or fist bump. The researchers then counted the num ber of bacteria present on the second recipient gloved hand

Hygiene of handshakes, high five and fist bumps. Health professionals warn that transmission of infectious diseases may occur during the traditional handshake greeting. Two alternative methods of greeting (popularized in sports) are the "high five" and the "fist bump." Researchers comparec the hygiene of these alternative greetings in a designed study and reported the results in the American Journal of Infection Control (Aug. 2014). A sterile-gloved hand was dipped into a culture of bacteria, then made contact for three seconds with another sterile-gloved hand via either a handshake, high five, or fist bump. The researchers then counted the num ber of bacteria present on the second recipient gloved hand

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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Question

9.24 Hygiene of handshakes, high five and fist bumps. Health
D
professionals warn that transmission of infectious diseases
HANDSHK may occur during the traditional handshake greeting. Two
alternative methods of greeting (popularized in sports) are
the "high five" and the "fist bump." Researchers compared
the hygiene of these alternative greetings in a designed study
and reported the results in the American Journal of Infection
Control (Aug. 2014). A sterile-gloved hand was dipped into
a culture of bacteria, then made contact for three seconds
with another sterile-gloved hand via either a handshake, high
five, or fist bump. The researchers then counted the num-
ber of bacteria present on the second, recipient, gloved hand.
This experiment was replicated five times for each contact
method. Simulated data (recorded as a percentage relative to
the mean of the handshake), based on information provided
by the journal article, are provided in the table.
Handshake:
High five:
Fist bump:
131
44
15
74 70 14
129
69
21
96
43
29
92
53
21
a. The researchers reported that “[more] bacteria were
transferred during a handshake compared with a high
five." Use a 95% confidence interval to support this
statement statistically.

b. The researchers also reported that "the fist bump ...
gave [a lower] transmission of bacteria" than the high
five. Use a 95% confidence interval to support this
statement statistically.
c. Based on the results, parts a and b, which greeting
method would you recommend as having the most hy-
giene?

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