Question

In 2008, the murder rates (per 100,000 residents) for the 50 states and the District of Columbia (D.C.) had a mean of 5.39 and a standard deviation of 4.434 (Statistical Abstract of the United States).8
a. D.C. had a murder rate of 31.4. Find its z -score. If the distribution were roughly normal, would this be unusually high? Explain.
b. Based on the mean and standard deviation, do you think that the distribution of murder rates is approximately normal? Why or why not?


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  • CreatedSeptember 11, 2015
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