A group of researchers investigated the effect of media usage (whether or not subjects watch television or use the Internet) in the bedroom on "Tiredness" during the day (measured on a 50 point scale). a. Identify the dependent and independent variable in this study .  b. Identify the level of measurement for each independent and dependent variab

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A group of researchers investigated the effect of media usage (whether or not subjects watch television or use the Internet) in the bedroom on "Tiredness" during the day (measured on a 50 point scale).

a. Identify the dependent and independent variable in this study . 
b. Identify the level of measurement for each independent and dependent variable.

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