how to calculate the confidence interval calculate what the confidence interval is for a leak is leak normally distributed what would be the confidence interval of leak what is the confidence interval why would we assume that the leakage is normally distributed. when to figure the confidence interval of the leak what is the probability of a leak being normally distributed for each variable? how to find the confidence interval of an estimate how to calculate confidence intervals how to calculate confidence interval what is the confidence interval for leak data how to calculate the confidence interval for the leak how to estimate leakage how do i calculate the confidence interval what is the confidence interval of the leak? how to calculate the confidence interval in a simulation how to calculate confidence interval in the event of leak how to determine a leak interval which variable is normally distributed for leaks