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I am concerned about having my child play in the neighborhood park near my house because of the possible presence of highly aggressive children. I

I am concerned about having my child play in the neighborhood park near my house because of the possible presence of highly aggressive children. I have drawn one random sample of 100 children from the neighborhood (N = 100) and I measure their aggressive play. I want to see if they are different from the general population in terms of their aggressive play. My sample had a mean aggressive play score of 11, with a standard deviation of 3. I know that the average aggressive play score in the general population is 10.

Based on these data, I calculate an observed test-statistic of 3.33, and look up critical values of +/- 1.98, I can conclude that __________________.

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the kids in my neighborhood are less aggressive than is typical.

the kids in my neighborhood are more aggressive than is typical.

I don't have enough information to answer this question.

the kids in my neighborhood have typical aggression levels.

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