A company in Man/land has developed a device that can be attached to car engines, which it believes will increase the miles per gallon that cars will get. The owners are interested in estimating the difference between mean mpg for cars using the device versus those that are not using the device in the population. The following data represent the mpg for random independent samples of cars from each population. The variances are assumed equal and the populations normally distributed. Without Device Given this scenario, which of the following test is appropriate for the owners' purposes? 0 Paired samplesttest O Independent samples 1 test O One samplettest O One-wayANOVA