Researchers in education are performing a study to see if listening to soothing music while taking a standardized math test increases the mean test score. The hypotheses are H 0 : mu=79 versus H a : mu>79 , and the p-value for the hypothesis test was 0.035. At the 5 % significance level , what should the researchers conclude?

1. There is sufficient evidence to conclude that listening to soothing sounds increases the mean test score.

2. There is sufficient evidence to conclude that listening to soothing sounds decreases the mean test score.

3. There is insufficient evidence to conclude that listening to soothing sounds decreases the mean test score.

4. none of the above