A new car manufacturing company has emerged and has claimed that its new hybrid car, the Pusho, gets a better gas mileage than the highest ranked Toyota Prius. Consumer Reports Magazine decides to test this claim at a 5% level of significance. Consumer Reports randomly selects 10 of each type of car, calculates the miles per gallon for each car in the study, and records the data in the table below. Assume miles per gallon of the cars is normally distributed.

Pusho: 54.152.455.749.750.648.951.854.556.949.8

Prius:53.254.349.850.150.556.147.853.456.848.7

1. Construct a 95% confidence interval for the difference in the gas mileage of Pusho and Prius.