Most companies consider Big Data analytics critical to success. However, is there a difference among small (6100 employees), mid sized (100– 999 employees), and large (1,000+ employees) companies in the proportion of companies that have already deployed Big Data projects? A study showed the results for the different company sizes. (Data extracted from 2014 Big Data Outlook: Big Data Is Transformative— Where Is Your Company? available at: bit.ly/1o8kaEo.)

Assume that 200 decision makers involved in Big Data purchases within each company size were surveyed. 

a. At the 0.05 level of significance, is there evidence of a difference among companies of different sizes with respect to the proportion of companies that have already deployed Big Data projects? 

b. Determine the p value in (a) and interpret its meaning.

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COMPANY SIZE HAVE ALREADY DEPLOYED BIG DATA PROJECTSl Yes No Mid-Sized 37% 63% Large 26% 74% 9% 91%