Exercise: Histogram of IQ's follow the normal curve, the average equals 100, the SD equals 15. Following (medical) terms are used: Idiot : below 20...

Hello,Based on the file I am sending you in attachment, I have to make 3 different small cases, and solve them by calculating the chance while being creative. The deadline is Tuesday 13 September 2011 at 4 pm European Time. I hope you can help me! I already thank you in advance.