Question

The speed of nitrogen molecules in the atmosphere (at 20ºC) follows a normal distribution with a mean speed of 500 meters/second and a standard deviation of 50 meters/second. Which conclusion does this information best support?
84% of the molecules have speeds between 450 meters/second and 550 meters/second.

68% of the molecules have speeds between 450 meters/second and 550 meters/second.

50% of the molecules have speeds between 450 meters/second and 550 meters/second.

34% of the molecules have speeds greater than 550 meters/second.

Answer 1

The answer is B

plz thank me, it keeps me motivated to answer more of your questions :)