One hundred volunteers who suffer from severe depression are available for a study. Fifty are selected at random and are given a new drug that is thought to be particularly effective in treating severe depression. The other fifty are given an existing drug for treating severe depression. A psychiatrist evaluates the symptoms of all volunteers after four weeks in order to determine if there has been substantial improvement in the severity of the depression. (a) Suppose the volunteers were first divided into men and women, and then half of the men were randomly assigned to the new drug and half of the women were assigned to the new drug. The remaining volunteers received the other drug. This would be an example of OA. confounding. The effects of gender will be mixed up with the effects of the drugs. B. replication. C. a block design. D. a matched pairs design. (b) The factor in this study is A. which treatment the volunteers receive. B. the extent to which the depression was reduced. C. the use of randomization and the fact that this was a comparative study. D. the use of a psychiatrist to evaluate the severity of depression. (c) The study would be double blind if OA. all volunteers were not allowed to see the psychiatrist nor the psychiatrist allowed to see the volunteers during the session in which the psychiatrist evaluated the severity of the depression. OB. neither drug had any identifying marks on it. C. neither the volunteers nor the psychiatrist knew which treatment any person had received. D. All of the above.
One hundred volunteers who suffer from severe depression are available for a study. Fifty are selected at random and are given a new drug that is thought to be particularly effective in treating severe depression. The other fifty are given an existing drug for treating severe depression. A psychiatrist evaluates the symptoms of all volunteers after four weeks in order to determine if there has been substantial improvement in the severity of the depression. (a) Suppose the volunteers were first divided into men and women, and then half of the men were randomly assigned to the new drug and half of the women were assigned to the new drug. The remaining volunteers received the other drug. This would be an example of OA. confounding. The effects of gender will be mixed up with the effects of the drugs. B. replication. C. a block design. D. a matched pairs design. (b) The factor in this study is A. which treatment the volunteers receive. B. the extent to which the depression was reduced. C. the use of randomization and the fact that this was a comparative study. D. the use of a psychiatrist to evaluate the severity of depression. (c) The study would be double blind if OA. all volunteers were not allowed to see the psychiatrist nor the psychiatrist allowed to see the volunteers during the session in which the psychiatrist evaluated the severity of the depression. OB. neither drug had any identifying marks on it. C. neither the volunteers nor the psychiatrist knew which treatment any person had received. D. All of the above.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section: Chapter Questions
Problem 8SGR
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Transcribed Image Text:4:08
One hundred volunteers who suffer from severe
depression are available for a study. Fifty are selected at
random and are given a new drug that is thought to be
particularly effective in treating severe depression. The
other fifty are given an existing drug for treating severe
depression. A psychiatrist evaluates the symptoms of all
volunteers after four weeks in order to determine if there
has been substantial improvement in the severity of the
depression.
(a) Suppose the volunteers were first divided into men
and women, and then half of the men were randomly
assigned to the new drug and half of the women were
assigned to the new drug. The remaining volunteers
received the other drug. This would be an example of
A. confounding. The effects of gender will be mixed
up with the effects of the drugs.
OB. replication.
OC. a block design.
D. a matched pairs design.
(b) The factor in this study is
OA. which treatment the volunteers receive.
B. the extent to which the depression was reduced.
C. the use of randomization and the fact that this was
a comparative study.
D. the use of a psychiatrist to evaluate the severity of
depression.
(c) The study would be double blind if
OA. all volunteers were not allowed to see the
psychiatrist nor the psychiatrist allowed to see the
volunteers during the session in which the psychiatrist
evaluated the severity of the depression.
B. neither drug had any identifying marks on it.
C. neither the volunteers nor the psychiatrist knew
which treatment any person had received.
D. All of the above.
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