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Assignment help 2225

I am working on CRJ 303 Homework 4 and I cannot seem to get question 5. I plug in the information into the equation but I keep getting .102 as an answer, please help me!!!

1.   A major research study concluded that the mean number of times adolescents had engaged in vandalism in the past 12 months was 9.4 times. We think that the true population average is lower than that. We collected our own sample of 200 adolescents and found that the average was 6.5 with a standard deviation of 2.01. Conduct a hypothesis test based on our assumption that the true population mean is less than the study’s findings. Set your alpha level to 0.01. What is your test statistic?

a.   -4.15

b.   -20.4

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