A researcher is interested in the effects of sleep deprivation and caffeine intake on mood.Participants were randomly assigned to a sleep condition (normal or deprived)and a caffeine condition (0 cups,2 cups,or 4 cups).After the manipulations,mood was measured (such that higher numbers indicated better mood).The results were as follows: a.Make a chart and graph of the cell and marginal means.
b.Analyze these data using a factorial analysis of variance,testing each effect at the .01 level,and including R² for each effect.
c.Explain your analysis and conclusions to a person who is familiar with one-way analysis of variance (including the structural model),but who does not know anything about factorial designs or the two-way analysis of variance.

Question

A researcher is interested in the effects of sleep deprivation and caffeine intake on mood.Participants were randomly assigned to a sleep condition (normal or deprived)and a caffeine condition (0 cups,2 cups,or 4 cups).After the manipulations,mood was measured (such that higher numbers indicated better mood).The results were as follows:

a.Make a chart and graph of the cell and marginal means.
b.Analyze these data using a factorial analysis of variance,testing each effect at the .01 level,and including R² for each effect.
c.Explain your analysis and conclusions to a person who is familiar with one-way analysis of variance (including the structural model),but who does not know anything about factorial designs or the two-way analysis of variance.

Quizplus · Accepted Answer

The Answer of A researcher is interested in the effects of sleep deprivation and caffeine intake on mood.Participants were randomly assigned to a sleep condition (normal or deprived)and a caffeine condition (0 cups,2 cups,or 4 cups).After the manipulations,mood was measured (such that higher numbers indicated better mood).The results were as follows: a.Make a chart and graph of the cell and marginal means. b.Analyze these data using a factorial analysis of variance,testing each effect at the .01 level,and including R² for each effect. c.Explain your analysis and conclusions to a person who is familiar with one-way analysis of variance (including the structural model),but who does not know anything about factorial designs or the two-way analysis of variance.

A Researcher Is Interested in the Effects of Sleep Deprivation