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 $1,987. A

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 $1,987. Assume that the distribution of the amounts spent follows the normal distribution with a standard deviation of $568. (a) What percent of the adults spend more than $2,425 per year on reading and entertainment? Percent % (b) What percent spend between $2,425 and $3,100 per year on reading and entertainment? Percent % (c) What percent spend less than $1,050 per year on reading and entertainment? Percent %