Sunrise Problem Entry Nr. 3268, by user 1 


A system gave nr_answers answers. All were correct. What is the expected failure rate of the system?
Laplace:
expected failure rate = (nr_answers+1)/(nr_answers+2)
http://en.wikipedia.org/wiki/Rule_of_succession
Upper bound:
error_rate=0.1
correct_answers=8
prob=Math.pow((1error_rate),correct_answers)
laplace=(correct_answers+1)/(correct_answers+2) 



