For Exercises 51–54, use the Crash data set, which contains information about the severity of injuries sustained by crash dummies when the National Transportation Safety Board crashed automobiles into a wall at 35 miles per hour.
crash
52. Head Injuries and Vehicle year. The variable year indicates the model year of the vehicle. Would you expect the population mean severity of head injuries suffered by the dummies to be the same across all model years? Use technology to perform the analysis of variance, using . Comment on the results.