The line graph shows the average number of awakenings during the night for men
and women of different ages. Use the graph to estimate the difference between the
average number of awakenings during the night between 25-year-old men and
25-year-old women.
The difference between the average number of awakenings during the night between
25-year-old men and 25-year-old women is
(Round your answer to the nearest tenth as needed.)