Assume the average purchase is $$8$ per customer, and your only expenses are fixed costs of $$4$ per hour and the wages of one employee at $$15$ per hour. How many customers do you need to break even $($i$.$e$.$ net profit of $=0$ for that single $4$ hour period$)?$ Now estimate the probability of breaking even or losing money $($i$.$e$.$ net profit of $<=0$ for that single $4$ hour period$).$ Show your calculations$/$reasoning$.$ Remember that you lose money with $<=$ your break$-$even number of customers