Viewing the database in Appendix A as a random sample from the idealized population of potential employees

Question:

Viewing the database in Appendix A as a random sample from the idealized population of potential employees you might hire next:
a. Find the 95% prediction interval for the experience of your next hire. Why is this interval so much wider than the confidence interval for the population mean experience?
b. Find the 95% prediction interval for the age of your next hire.