A survey of nonprofit organizations showed that online fundraising increased in the past year. Based on a random sample of 59 nonprofit organizations, the mean one-time gift donation in the past year was $80, with a standard deviation of $18.

a. If you test the null hypothesis at the 0.05 level of significance, is there evidence that the mean one-time gift donation is greater than $75?

b. Interpret the meaning of the p-value in this problem.