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In: Statistics and Probability

A researcher conducts an independent-measures study examining how the violence of a TV show is related...

A researcher conducts an independent-measures study examining how the violence of a TV show is related to aggression in children. To study this question they bring children into the lab and have one sample of children watch a non-violent TV show for 20 minutes. They have a second sample of children watch a violent TV show for 20 minutes. After the TV show, the researcher examines the children's aggression by recording the number of aggressive responses each of the children display. The data are as follows.

Non-Violent TV n = 10 M = 14 SS = 180.5

Violent TV n = 15 M = 19 SS = 130.0

a. Conduct the 4 steps of hypothesis testing to determine whether the level of violence in TV has a significant effect on aggression? Use an alpha level of .05, two tails

b. Compute Cohen’s d to measure the size of the treatment effect and explain what Cohen's d tells you about the research question

c. Write your results in APA format

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