The following data are the top 50 men€™s times (in minutes) in the 2013 ING New York City Marathon.

a. Construct a boxplot.
b. What is the median? What does it mean in this situation?
c. What is the IQR? What does it mean in this situation?
d. Which has greater range, the times of the runners in the top 25% of the sample or the times of the runners in the bottom 25% of the sample? Explain.
e. A student says there are the same number of observations in the class 135€“145 minutes as there are in the class 145€“155 minutes, because each class has width 10 minutes. What would you tell the student? Refer to the boxplot in your response.

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148 128 133 129 130 130 150 131 155 132 152 155 142 152 153 132 137 143 145 131 155 152 133 150 144 144 138 143 147 152 153 146 143 154 152 148 131 150 150 132 146 144 155 149 131 145 151 154 143 142