Given the following information, would your decision be to reject or fail to reject the null hypothesis? (Set the level of significance at .05 for decision making.) Provide an explanation for your conclusion.

4a. The null hypothesis that there is no relationship between the type of music a person listens to and his crime rate.

4b. The null hypothesis that there is no relationship between the amount of coffee a student consumes and GPA. p = .62.

4c. The research hypothesis that there is a negative relationship between the number of hours worked and level of job satisfaction. p = .51.