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April 16, 2014

Homework Help: Calculus

Posted by Cesar on Friday, October 28, 2011 at 12:08am.

Suppose that p(x) is the density function for heights of American men, in inches, and suppose that p(69)=0.22. Think carefully about what the meaning of this mathematical statement is.

(a) Approximately what percent of American men are between 68.7 and 69.3 inches tall?

b) Suppose P(h) is the cumulative distribution function of p. If P(69)=0.5, estimate each of:
P(68.7)=
P(68.4)=

For a I multiplyed .22 by (69.3-68.7)= 13.2%

I don't know what to do for part b though...

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