A city’s annual rainfall totals are normally distributed, and the probability that the city gets more than 43 point 2 inches of rain in a year is given by cap p times open paren z is greater than or equal to 1 point 5 close paren is equal to 0 point 0 6 6 8 If the standard deviation of the city’s yearly rainfall totals is 1 point 8 inches, what is the city’s mean annual rainfall?