Researchers evaluated the impact of including a warning statement on juror's perception of videotaped witness testimony. At random, half the participants in a mock court trial viewed the witness testimony with a warning about the relevance and limitations of witness testimonies. The est viewed the testimony without that warning. Participants all rated the witness reliability on a 10-point scale. This is A) a completely randomized experiment. B) a case-control observational study. C) a cross-sectional sample survey. D) a matched pairs experiment. E) a longitudinal cohort study. F) an unscientific study using voluntary response.

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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Researchers evaluated the impact of including a warning statement on juror's perception of
videotaped witness testimony. At random, half the participants in a mock court trial viewed the
witness testimony with a warning about the relevance and limitations of witness testimonies. The
rest viewed the testimony without that warning. Participants all rated the witness reliability on a
10-point scale. This is
A) a completely randomized experiment.
B) a case-control observational study.
C) a cross-sectional sample survey.
D) a matched pairs experiment.
E) a longitudinal cohort study.
F) an unscientific study using voluntary response.
Transcribed Image Text:Researchers evaluated the impact of including a warning statement on juror's perception of videotaped witness testimony. At random, half the participants in a mock court trial viewed the witness testimony with a warning about the relevance and limitations of witness testimonies. The rest viewed the testimony without that warning. Participants all rated the witness reliability on a 10-point scale. This is A) a completely randomized experiment. B) a case-control observational study. C) a cross-sectional sample survey. D) a matched pairs experiment. E) a longitudinal cohort study. F) an unscientific study using voluntary response.
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