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 $1904. Assume that the distribution of the amounts spent follows the normal distribution with a standard deviation of $422. Refer to the table in Appendix B.1. (Round 2 score computation to 2 decimal places and the final answer to 2 decimal places.) a. What percentage of the adults spend more than $2020 per year on reading and entertainment? Percentage b. What percentage of the adults spend between $2020 and $3000 per year on reading and entertainment? Percentage c. What percentage of the adults spend less than $1000 per year on reading and entertainment? Percentage