In a research study about training basketball players to shoot free throws, two groups are compared. One group just practices shooting free throws, while the second group worked with a sports psychologist on relaxation techniques along with practicing shooting free throws. When the research is complete, the p-value is found to be 0.03. What is the correct research conclusion?

a. Fail to reject the null. There is no evidence of a difference between the average performance of the two groups.
b. Fail to reject the null. We have evidence of a difference between the average performance of the two groups.
c. Reject the null. There is no evidence of a difference between the average performance of the two groups.
d. Reject the null. We have evidence of a difference between the average performance of the two groups.