I NEED THE ANSWER TO 10.17 ONLY- NOT 10.16 10.16. The CEO of ABC Company wishes

Question

I NEED THE ANSWER TO 10.17 ONLY- NOT 10.16

10.16. The CEO of ABC Company wishes to determine whether there are differences between union members and managers in their attitude toward the company. The CEO asks 30 randomly selected union members and 28 managers to complete a 40-item questionnaire designed to measure attitudes toward the company. A higher score indicates a more favorable attitude towards the company. The results are displayed in the following table:

                    Group n              Mean                     SD           t               p             

                    Union                 30           18.30                      9.85       

.03

Managers              28           23.07                      9.07

Which t test should the CEO use to compare the responses of the union members and the managers? Explain.

There are two independent samples and population standard deviations are unknown, so two independent sample t tests should be used.

What are the degrees of freedom?

30+28-2= 56

What are the conclusions of the CEO based on the results in the table? Explain

P-value>0.01

Since p-value= 0.03 and it is less than 0.05, we can reject the null hypothesis at 5% level of significance. There are differences between union members and managers in their attitude towards the company.

10.17. Based on the results of the study described in the previous question, the CEO and the HR manager decide to implement several programs to get the union more actively involved in making decisions at ABC. After implementing the programs for a year, the CEO asks the same group of union members (n=30) to about their attitudes towards the company again, using the same questionnaire as the one used the year before. The following table displays the results obtained by the CEO:

                Scores                    Mean                     SD                           t                               p

                Pretest                    18.30                      9.85

.0001

Posttest                  22.10                      1.26

Explanation / Answer

There are two independent samples and population standard deviations are unknown, so two independent sample t tests should be used.

degrees of freedom

30+28-2= 56

Since p-value=0.0001<0.05,so we reject the null hypothesis at 5% level of significance and we can conclude that there is enough evidence to conclude that implemention of several programs makes the union more active involved in making decisions at ABC,since there is significant difference between the scores of pretest and posttest people.

Related Questions

Navigate

• Browse (All)
• Browse I
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.