A new cream was developed to reduce the irritation Does this procedure describe a completely randomized design for this experiment? caused by poison ivy. To test the effectiveness, researchers placed an ad online asking for volunteers Yes, the subjects will be exposed to the poison ivy. to participate in the study, and 100 subjects replied. They are informed that one group of 50 will receive a Yes, the subjects are randomly assigned to each new cream and the remaining group of 50 will receive a treatment. cream with no active ingredient. The subjects are numbered 1-100 and these numbers are put into a random number generator. The first 50 unique numbers will represent the subjects that will receive No, the subjects are asked to return in three days. It is possible that some of them may not return, which will introduce bias into the results. O No, the subjects are randomly assigned to the two the new cream and the remaining 50 subiects will

MATLAB: An Introduction with Applications
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Does this procedure describe a completely
randomized design for this experiment?
A new cream was developed to reduce the irritation
caused by poison ivy. To test the effectiveness,
researchers placed an ad online asking for volunteers
O Yes, the subjects will be exposed to the poison ivy.
O Yes, the subjects are randomly assigned to each
to participate in the study, and 100 subjects replied.
They are informed that one group of 50 will receive a
new cream and the remaining group of 50 will receive a
treatment.
O No, the subjects are asked to return in three days. It
is possible that some of them may not return, which
cream with no active ingredient. The subjects are
numbered 1-100 and these numbers are put into a
random number generator. The first 50 unique
will introduce bias into the results.
numbers will represent the subjects that will receive
the new cream and the remaining 50 subjects will
receive the inactive cream. All subjects are exposed to
O No, the subjects are randomly assigned to the two
treatment groups, but the groups are not guaranteed
to have 50 subjects in each.
poison ivy and given their cream. They are asked to
return in three days and report their level of irritation.
The average scores for each cream are compared.
Transcribed Image Text:Does this procedure describe a completely randomized design for this experiment? A new cream was developed to reduce the irritation caused by poison ivy. To test the effectiveness, researchers placed an ad online asking for volunteers O Yes, the subjects will be exposed to the poison ivy. O Yes, the subjects are randomly assigned to each to participate in the study, and 100 subjects replied. They are informed that one group of 50 will receive a new cream and the remaining group of 50 will receive a treatment. O No, the subjects are asked to return in three days. It is possible that some of them may not return, which cream with no active ingredient. The subjects are numbered 1-100 and these numbers are put into a random number generator. The first 50 unique will introduce bias into the results. numbers will represent the subjects that will receive the new cream and the remaining 50 subjects will receive the inactive cream. All subjects are exposed to O No, the subjects are randomly assigned to the two treatment groups, but the groups are not guaranteed to have 50 subjects in each. poison ivy and given their cream. They are asked to return in three days and report their level of irritation. The average scores for each cream are compared.
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