The weekend sales of beer at one "ILOVELIQUOR" store follow a normal distribution with mean of 120 cases and standard deviation of 35. Another Store "ILOVEBEER", usually has higher sales normally distributed with mean of 150 cases and standard deviation of 20. If the two stores currently have 140 and 180 cases of beer in stock, what is the probability of Store "ILOVELIQUOR" running out of stock?

Hint: You are looking for the probability that demand for liquor would exceed current stock.