Which of the following statements is not true?

The ratio of the mean velocity to the rms velocity is dependent of the temperature.

The square of the mean velocity  of the molecules is equal to the mean square velocity  at a certain temperature.

Mean kinetic energy of the gas molecule at any given temperature is independent of the mean velocity.

The difference between rms velocity and mean velocity at any temperature for different gases diminishes as larger and yet larger molar masses are considered.