Question

In the book Business Research Methods (5th ed.), Donald R. Cooper and C. William Emory discuss studying the relationship between on-the-job accidents and smoking. Cooper and Emory describe the study as follows: Suppose a manager implementing a smoke-free workplace policy is interested in whether smoking affects worker accidents. Since the company has complete reports of on-the-job accidents, she draws a sample of names of workers who were involved in accidents during the last year. A similar sample from among workers who had no reported accidents in the last year is drawn. She interviews members of both groups to determine if they are smokers or not. Use the Output in the given Figure 1 to test the hypothesis that the incidence of on-the-job accidents is independent of smoking habits. Set a=.01 [5 points)

Please show any formulas if used

Answer 1

Ans! let o is observed Eis Eorpected z 7.94 +166+0.35+0.30 +164+1-41 =) 76309 olfa M)(n-1)=(3-1JX (2-1)= 2. pralue 0.0259 since pralue 70.01 so we do not reject to and conclude that the incidence on the job accidents is not endependent af smoking habits -