Suppose you have a distribution for which you know the standard deviation, but you don't know the expected value (e.g., an experiment). To calculate the expected value, you can get N variables with that distribution and thus (averaging) obtain the expected value. a) With what probability y will your measurement be less than e from the actual expected value? b) Using the previous part, obtain the given confidence interval e. Namely, P(U - ESE (x1) SutE)