Question: An advertising firm claims that the average expenditure for advertising for their customers is at least $12,500 per year. You want to test this claim, so you randomly select 10 of their customers. The results are listed below. At a sig. level of .01 can you reject this claim? Explain.

13445 11220 10157 13217 9990

12125 10116 14350 13590 12100