19. Using the information from the previous question, what is the P value of education? At an alpha level of 5%, what is your conclusion on the test on education?

a) P value >0.05; the null hypothesis on education is rejected and we can conclude that the employees' salary varies with their education level.

b) P value <0.05; the null hypothesis on education is rejected and we can conclude that the employees' salary varies with their education level.

c) P value < 0.05; the null hypothesis on education is accepted and we can conclude that the employees' salary does not vary with their education level. d) P value >0.05; the null hypothesis on education is accepted and we can conclude that the employees' salary does not vary with their education level.

20. What is the P value of interaction effect? At an alpha level of 5%, what is your conclusion of the test on interaction effect?

a) P value <0.05; the null hypothesis on interaction effect is rejected and there is an interaction effect between age and education level

b) P value >0.05; the null hypothesis on interaction effect is rejected and there is no interaction effect between age and education level

c) P value >0.05; the null hypothesis on interaction effect is accepted and there is no interaction effect between age and education level

d) P value < 0.05; the null hypothesis on interaction effect is accepted and there is no interaction effect between age and education level