What happens in terms of energy when a moving car hits a parked car, causing the parked car to move?
the moving car transfers kinetic energy to the parked car.
kinetic energy in the moving car disappears.
kinetic energy in the parked car is created.
the parked car transfers kinetic energy to the moving car.

Aresearcher created three groups based on participants bmi: normal weight, overweight and obese. the hypothesis being tested is that the three groups differ in the mean number of artificially sweetened drinks consumed weekly. which statistical test might the researcher use, assuming a reasonably normal distribution of values.