According to a government study among adults in the 25- to 34-year age group, the mean amount spent per year on reading and entertainment is $1,896. Assume that the distribution of the amounts spent follows the normal distribution with a standard deviation of $596.
A) What percent of the adults spend more than $2,350 per year on reading and entertainment?
B) What percent spend between $2,350 and $2,800 per year on reading and entertainment?
C) What percent spend less than $1,150 per year on reading and entertainment?