Ikarus, the Hungarian bus maker, lost its important Commonwealth of Independent States market and is reported on the verge of collapse. The company is now trying a new engine in its buses and has gathered the following random samples of miles-per-gallon figures for the old engine versus the new:

Is there evidence that the new engine is more economical than the old one?

Transcribed Image Text:

Old engine 8,9, 75, 8.5, 6, 9,9, 10, 7, 8.5, 6, 10, 9, 8, 9, 5, 9.5, 10, 8 New engine: 10,9, 9, 6,9, 11, 11, 8, 9, 6.5, 7,9, 10, 8,9, 10, 9, 12, 11.5, 10, 7, 10, 8.5