The average landscaper mows 1.4 acres of grass per day in Athens, Georgia. Because labor costs are increasing, the city decides to try a new brand of mower. Ten randomly selected landscapers are given these new mowers. After a test period, these 10 landscapers cut an average of 2.1 acres per day, with a standard deviation of .6 acre.

1. State Ho and Ha
2. Show the math
3. Reject or retain the Ho at a = .05