Question

A study of video game usage and eyesight was looked at 400 high school students. For each student who plays games, the investigator found someone of the same in various aspects (same sex, age, and race, etc.) who does not play games. And he measured their eyesight to compare. What type of experimental design is this?
a. Matched pairs design. b. Randomized Block design
C. A completely randomized design
d. An Uncontrolled experiment e. Convenience design

Answer 1

Answer:

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