The table below shows the number of runners in four marathons with times in various
ranges. The times of the runners in which marathon represent an extreme distribution:
Marathon A Marathon B Marathon C Marathon D
Greater than
2:30 but less
122
139
155
171
than 3:00
Greater than
3:00 but less
148
150
198
213
than 3:30
Greater than
3:30 but less
244
268
than 4:00
Greater than
4:00 but less
206
162
202
227
than 4:30
Greater than
4:30 but less
267
134
161
189
than 5:00
179
188
A. Marathon A
B. Marathon B
C. Marathon C
D. Marathon D