This is a R studio question

For people whose age is greater than or equal to 30 and less than or equal to 51 living in Staten Island find the following statistics: 1. Average income for people with a four year college degree Average income for people without a four year college degree The percent of people with a four year college degree earning more than 18 thousand dollars. The percent of people without a four year college degree earning more than 18 thousand dollars. #WN