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?

a. 84% of the molecules have speeds between 450 meters/second and 550 meters/second.

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

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

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

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? 

a. 84% of the molecules have speeds between 450 meters/second and 550 meters/second. 

b. 68% of the molecules have speeds between 450 meters/second and 550 meters/second. 

c. 50% of the molecules have speeds between 450 meters/second and 550 meters/second. 

d. 34% of the molecules have speeds greater than 550 meters/second.

stephend95 · Answer

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royalranger · Answer

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