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The paper "Turning to Learn: Screen Orientation and Reasoning from Small Devices"+ describes a study that investigated whether cell phones with small screens are useful for gathering information. The researchers wondere if the ability to reason using information read on a small screen was affected by the screen orientation. The researchers assigned 33 undergraduate students who were enrolled in a psychology course at a large public university to one of two groups at random. One group read material that was displayed on a small screen in portrait orientation, and the other group read material on the same size screen but turned to display the information in landscape orientation (see figure below). Portrait Landscape O The researchers found that performance on a reasoning test that was based on the displayed material was better for the group that read material in the landscape orientation. (a) Is the described study an observational study or an experiment? O an observational study O an experiment (b) Did the study use random selection from some population? O Yes, the subjects were randomly selected from students at the large public university. O Yes, the students were randomly selected from one of the two groups at random. O No, the students were not randomly selected or assigned in any way. O No, the subjects were randomly assigned to the treatments, but were all from the same course. (c) Did the study use random assignment to experimental groups? O Yes O No

The paper "Turning to Learn: Screen Orientation and Reasoning from Small Devices"+ describes a study that investigated whether cell phones with small screens are useful for gathering information. The researchers wondere if the ability to reason using information read on a small screen was affected by the screen orientation. The researchers assigned 33 undergraduate students who were enrolled in a psychology course at a large public university to one of two groups at random. One group read material that was displayed on a small screen in portrait orientation, and the other group read material on the same size screen but turned to display the information in landscape orientation (see figure below). Portrait Landscape O The researchers found that performance on a reasoning test that was based on the displayed material was better for the group that read material in the landscape orientation. (a) Is the described study an observational study or an experiment? O an observational study O an experiment (b) Did the study use random selection from some population? O Yes, the subjects were randomly selected from students at the large public university. O Yes, the students were randomly selected from one of the two groups at random. O No, the students were not randomly selected or assigned in any way. O No, the subjects were randomly assigned to the treatments, but were all from the same course. (c) Did the study use random assignment to experimental groups? O Yes O No

MATLAB: An Introduction with Applications
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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The paper "Turning to Learn: Screen Orientation and Reasoning from Small Devices"t describes a study that investigated whether cell phones with small screens are useful for gathering information. The researchers wondered if the ability to reason using information read on a small screen was affected by the screen orientation. The researchers assigned 33 undergraduate students who were enrolled in a psychology course at a large public university to one of two groups at random. One group read material that was displayed on a small screen in portrait orientation, and the other group read material on the same size screen but turned to display the information in landscape orientation (see figure below). Portrait Landscape ii The researchers found that performance on a reasoning test that was based on the displayed material was better for the group that read material in the landscape orientation. (a) Is the described study an observational study or an experiment? O an observational study O an experiment (b) Did the study use random selection from some population? O Yes, the subjects were randomly selected from students at the large public university. O Yes, the students were randomly selected from one of the two groups at random. O No, the students were not randomly selected or assigned in any way. O No, the subjects were randomly assigned to the treatments, but were all from the same course. (c) Did the study use random assignment to experimental groups? O Yes No
Transcribed Image Text:The paper "Turning to Learn: Screen Orientation and Reasoning from Small Devices"t describes a study that investigated whether cell phones with small screens are useful for gathering information. The researchers wondered if the ability to reason using information read on a small screen was affected by the screen orientation. The researchers assigned 33 undergraduate students who were enrolled in a psychology course at a large public university to one of two groups at random. One group read material that was displayed on a small screen in portrait orientation, and the other group read material on the same size screen but turned to display the information in landscape orientation (see figure below). Portrait Landscape ii The researchers found that performance on a reasoning test that was based on the displayed material was better for the group that read material in the landscape orientation. (a) Is the described study an observational study or an experiment? O an observational study O an experiment (b) Did the study use random selection from some population? O Yes, the subjects were randomly selected from students at the large public university. O Yes, the students were randomly selected from one of the two groups at random. O No, the students were not randomly selected or assigned in any way. O No, the subjects were randomly assigned to the treatments, but were all from the same course. (c) Did the study use random assignment to experimental groups? O Yes No
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