Question: (2 pt) The Environmental Protection Agency (EPA) fuel economy ratings say that the Toyota Prius hybrid car gets 48 miles per gallon (mpg) on the highway. Deborah wonders whether the long-term average highway mileage of her new Prius is less than 48 mpg. She keeps careful records of the s mileage for 3000 miles of highway driving. Her result is \(\bar{X}\) = 47.2 mpg.

a. What would the null (Ho) and alternative hypotheses (Ha) be to test her question about her cars actual mileage?