Question

Desperately in need of help with Statistics Business Analytics study guide!!!!!!
The Foxboro Company is considering moving its sales office to the area around the town of
Pittsburgh, Pennsylvania. The company sells financial services to than $ 100,000 a year. The management of Foxboro is interested in five counties it should locate its sales office.
In which of the five counties is there the greatest number of above $200,000?
*(a) Allegheny (b) Armstrong
(c) Butler (d) Clarion
(e) Westmoreland
households with an income
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Answer 1

My prof marked the answers im just having a really hard time understanding how he got them.