
Concept explainers
a. Is the shape of this distribution best classified as normal, skewed to the right or skewed to the left?
b. Calculate the mean murder rate per 100.000 residents for the 50 states and Washington. D.C
c. Find the median murder rate per 100.000 residents for the 50 states and Washington. D.C
d. Are the mean and median murder rates consistent with the shape of the distribution that you described in part (a)? Explain your answer
e. The standard deviation for the data is approximately 4.2.If the distribution were roughly normal, what would be the z-score, rounded to one decimal place, for Washington, D.C? Does this seem unusually high? Explain your answer.

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Chapter 12 Solutions
Thinking Mathematically, Books a la Carte Edition plus MyLab Math with Pearson eText -- Access Card Package, 4/e (7th Edition)
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