Is there a difference in mean hours slept by on-campus and off-campus students?
a. Give at least one reason why on-campus students may get more sleep.
b. Give at least one reason why on-campus students may get less sleep.
c. Use software to access the student survey data, and report the mean hours of sleep for on-campus and off-campus students.
d. Which sample mean is higher?
e. By how many minutes is one sample mean higher than the other?
f. Use software to carry out the appropriate test; report the P-value.
g. The P-value is fairly small; does this mean we have a good deal of evidence that mean hours of sleep differ for onand off-campus students, or does it mean we have evidence that mean hours of sleep differ a good deal for on- and offcampus students?
h. Explain how age could be a possible confounding variable, and how it could be dealt with.