Clarification of chi square test

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A software company wants to determine whether there is a relationship between their three sales offices and the sales of their software products. The actual sales results are

Product A Product B Product C
Office 1 18 8 24
Office 2 15 22 13
Office 3 21 16 63

Under the null hypothesis, what is the expected number of Product A that would be sold by Office 2?

A) 27.00 B) 10.80 C) 13.50 D) 18.00

Please explain all steps in problem so that I understand how to get to the solution.

Reference no: EM13107977

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