Astronauts increased in height by an average of approximately 40 mm during the Apollo-Soyuz missions, due to the absence of grav
ity compressing their spines during their time in space. To find out if something similar happens on Earth, a NASA experiment measured the heights of six men immediately before a three day bed rest. By the end of the third day, they had increased in height by an average of 14 mm, with a standard deviation of 0.66 mm. Find the 95% confidence interval for the change in height after 3 days of bed rest. Express your answer as lower bound to higher bound with one decimal place. Do not include units.
