Fit test and chi square

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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

Total

400

Reference no: EM1314304

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