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Homework answers / question archive / A recent report suggests that Chief Information Officers (CIO's) who report directly to Chief Financial Officers (CFO's) rather than Chief Executive Officers (CEO's) are more likely to have IT agendas that deal with cost cutting and compliance

A recent report suggests that Chief Information Officers (CIO's) who report directly to Chief Financial Officers (CFO's) rather than Chief Executive Officers (CEO's) are more likely to have IT agendas that deal with cost cutting and compliance

Math

A recent report suggests that Chief Information Officers (CIO's) who report directly to Chief Financial Officers (CFO's) rather than Chief Executive Officers (CEO's) are more likely to have IT agendas that deal with cost cutting and compliance. In a random sample of 858 companies, it was found that CIO's reported directly to CFO's in 170 out of 528 service firms and in 98 out of 330 manufacturing companies.

a) Determine the χ2 statistic.

b) Determine the p-value.

c) Give 95% confidence interval for the difference in proportions of companies in which the CIO reports directly to CFO between service and manufacturing firms.

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