(All Steps) There are four entrances to the Government Center Building in downtown Philadelphia. The building maintenance supervisor would like to know if
Question: There are four entrances to the Government Center Building in downtown Philadelphia. The building maintenance supervisor would like to know if the entrances are equally utilized. To investigate, 400 people were observed entering the building. The number using each entrance is reported below. At the .01 significance level, is there a difference in the use of the four entrances?
| Entrance | Frequency |
| Main Street | 140 |
| Broad Street | 120 |
| Cherry Street | 90 |
| Walnut Street | 50 |
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