For questions 6- 9 use the following information

A random sample of n=14 individuals working for a sales company is obtained from a population with the following summary statistics pertaining to annual income = 52,000 = 5,000 these 14 individuals have undergone special training in sales techniques and have an average M=60,000 in annual income. The CEO wishes to test the claim that those in the training program have an income not equal to those not having received training.

What would the null hypothesis be in this case?