When tested for compliance with Sarbanes Oxley requirements for financial records
When tested for compliance with Sarbanes-Oxley requirements for financial records and fraud protection, 14 of 180 publicly traded business services companies failed, com- pared with 7 of 67 computer hardware, software, and telecommunications companies.
(a) Is this a statistically significant difference at α = .05?
(b) Can normality of p1 – p2 be assumed?
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