Determine whether there really is a relationship between an employee\'s performa

Question

Determine whether there really is a relationship between an employee's performance in the company's training program and hi s or her ultimate success in the job, the company takes a sample of 400 cases from its very extensive files and obtains the results shown in the following table : Performance in training program Use 0.01 level of significance to test the null hypothesis that performance in the training program and success in the job are independent. If X is a normal variate with mean 1 an d s.d. 0.6, then obtain P (X > 0), P(X|- 1 0.6|) and P (- 1.8

Explanation / Answer

23 60 29 112 16.8 52.64 42.56 2.288 1.029 4.32 28 79 60 167 25.05 78.49 63.46 0.347 0.003 0.189 9 49 63 121 18.15 56.87 45.98 4.613 1.089 6.3 60 188 152 400 Chi-square calculated is 20.179, degrees of freedom is 4,P-value is 0.000 P-value < 0.01, we reject null hypothesis. Performence in the training program and succes in thejob are not independent. 23 60 29 112 16.8 52.64 42.56 2.288 1.029 4.32 28 79 60 167 25.05 78.49 63.46 0.347 0.003 0.189 9 49 63 121 18.15 56.87 45.98 4.613 1.089 6.3 60 188 152 400

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