The average water use per person is normally distributed. In Santa Cruz county the mean water use per person is 45 gallons per day, with standard deviation 8 gallons.

In Sacramento county the mean water use per person is 66 gallons per day, with standard deviation 11 gallons.

a) What is the probability an individual in Santa Cruz uses more than 66 gallons of water per day?

b) What is the probability an individual in Sacramento uses less than 45 gallons of water per day?

c) What is the probability an individual in Sacramento uses between 45 and 60 gallons of water per day?

d) What is the probability an individual in Santa Cruz uses between 45 and 60 gallons of water per day?