If you wanted to make 8 cups of juice and you used the first recipe, how much water and juice mix would you need? first recipe;
3 cups of juice
7 cups of water

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?