(06/12/2011 08:27 PM)ZiNgA BuRgA Wrote:  

(06/12/2011 06:35 PM)andrewcc Wrote:  they should try and fit other subjects in as well as sex... would be great to see how they'd work the maths curriculum

"Calculate the tangent to the end part of this condom."

1. Assume a condom tip has a spherical shape (to simplify matters) with radius 5mm.  What volume of cum can it hold in it's natural size?


2. Given the likelihood of a condom tip breaking with relation to it's radius expanding beyond the natural size is...

p(break) = { 0,          r≤1
                 (r-1)^2,  1<r<2
                 1,           r≥2  }

If in one particular session of sexual intercourse you cum out 800mm^3 of cum, what minimum radius is required so that there is a 95% probability if it not breaking?


3 (challenge).  A condom is designed with a safe capacity to hold 800mm^3 of cum.  If in a study of 36 entries, it is found the average amount of cum ejaculated is 700mm^3 with a standard deviation of 200mm^3.  Assume the amount of cum ejaculated is normally distributed, with 99% confidence, can you say the condom is actually safe?

(This post was last modified: 07/12/2011 05:45 PM by Assassinator.)