Melody

$$tan(\theta/2)=2/(36*5)$$

Where is your working Beary ?

Mmm   I like being a Queen again  :))

Thanks Heather 

Mathcad, you ARE assuming that there are 100 products.

 Alan has tried to show you where you logic falls in a heap 

Nice answer MathsGod1    

I thought this was a really cool question.  Thanks for providing it Alan.

Isn't any one of you high school students going to show us what you are made of and answer it.

You could at least give it a try :/    

Thanks for that great answer Geno.   

Thanks for the puzzle Fiora - I have added it to our Logic Puzzle thread   

Yes it is a statistics thing

IQR stands for inter-quartile range

I am glad you like it. I don't know if it is available for iPhones :/

Yes, that is what I would go for too Geno :)