Part A Explain the applicability and functionality of chi-square testing.

Part A Explain the applicability and
functionality of chi-square testing. Provide an original example of a data
chart that illustrates this concept with an appropriate explanation including
hypotheses.
Part B Discuss the concept of data mining and
two (2) examples of current companies involved in this type of business
discussing their operations. Furthermore, explain the integral role marketing
plays in this venue of data mining.