The accompanying data are the percentage of babies born prematurely in 2008 for the 50 U. S. states and the District of Columbia ( DC) ( USAToday. com).

a. The smallest value in the data set is 9.5 (Vermont), and the largest value is 18.0 (Mississippi). Are these values outliers? Explain.
b. Construct a boxplot for this data set and comment on the interesting features of the plot.

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