During the course of a tournament , john first serve speeds averaged 115 mph. Assumer that the distribution of the first serve speeds is apporximately normal with a standard deviation of 4 mph.  1) about what percent of johns first servers were slower than 110? ABout what percent of johns serves were faster than 125mph? About that percent of Johns first serves were between 110 and 120mph? Estimate the 40th percentile for johns distribution of first serve speeds. Estimate the value of q3 for johns distribution of first serve speeds

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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During the course of a tournament , john first serve speeds averaged 115 mph. Assumer that the distribution of the first serve speeds is apporximately normal with a standard deviation of 4 mph. 

1) about what percent of johns first servers were slower than 110?

ABout what percent of johns serves were faster than 125mph?

About that percent of Johns first serves were between 110 and 120mph?

Estimate the 40th percentile for johns distribution of first serve speeds.

Estimate the value of q3 for johns distribution of first serve speeds

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