There is no cure for the common cold, but many cold remedies claim to make you feel better faster. A consumer watch group decides to compare the effectiveness of Vitamin C to the effectiveness of Echinacea in lessening the duration of the common cold. Sixty participants have volunteered to be infected with the cold virus for this study. In addition to the Vitamin C and Echinacea treatments which will be administered in capsules that are identical in appearance, one of the researchers suggests that they add a group that receives no treatment but receives an identical looking capsule with an inactive ingredient. If they decide not to add a group that receives no treatment, then: (A) This study will not be an experiment since there will not be a control group. (B) Even if there is a difference in recovery time between the Vitamin C and Echinacea groups, we will not know if the recovery times are less than if no treatment were given. (C) The experimental design will not be taking into consideration the natural variability in the duration of the common cold from person to person. (D) This study will be biased in favor of finding that the cold remedies are effective at reducing the length of the common cold in comparison to the length of an untreated common cold. (E) It will not be possible to conduct this study as a double-blind experiment.
There is no cure for the common cold, but many cold remedies claim to make you feel better faster. A consumer watch group decides to compare the effectiveness of Vitamin C to the effectiveness of Echinacea in lessening the duration of the common cold. Sixty participants have volunteered to be infected with the cold virus for this study. In addition to the Vitamin C and Echinacea treatments which will be administered in capsules that are identical in appearance, one of the researchers suggests that they add a group that receives no treatment but receives an identical looking capsule with an inactive ingredient. If they decide not to add a group that receives no treatment, then: (A) This study will not be an experiment since there will not be a control group. (B) Even if there is a difference in recovery time between the Vitamin C and Echinacea groups, we will not know if the recovery times are less than if no treatment were given. (C) The experimental design will not be taking into consideration the natural variability in the duration of the common cold from person to person. (D) This study will be biased in favor of finding that the cold remedies are effective at reducing the length of the common cold in comparison to the length of an untreated common cold. (E) It will not be possible to conduct this study as a double-blind experiment.
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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Transcribed Image Text:There is no cure for the common cold, but many cold remedies claim to make you feel better faster.
A consumer watch group decides to compare the effectiveness of Vitamin C to the effectiveness of
Echinacea in lessening the duration of the common cold. Sixty participants have volunteered to be
infected with the cold virus for this study. In addition to the Vitamin C and Echinacea treatments
which will be administered in capsules that are identical in appearance, one of the researchers
suggests that they add a group that receives no treatment but receives an identical looking capsule
with an inactive ingredient. If they decide not to add a group that receives no treatment, then:
(A) This study will not be an experiment since there will not be a control group.
(B) Even if there is a difference in recovery time between the Vitamin C and Echinacea groups, we
will not know if the recovery times are less than if no treatment were given.
(C) The experimental design will not be taking into consideration the natural variability in the
duration of the common cold from person to person.
(D) This study will be biased in favor of finding that the cold remedies are effective at reducing the
length of the common cold in comparison to the length of an untreated common cold.
(E) It will not be possible to conduct this study as a double-blind experiment.
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