How long does it take to fall asleep at night? This depends on what happened the night before. A random sample of 38 college students was kept awake all night and the next day (24 hours).
The mean time for this group to go to sleep the next night was 2.5 minutes with standard
deviation of 0.7 minutes. Compute and interpret a 95% confidence interval for the mean time
of all such students to fall asleep.