5. a clinic wishes to look at two different
treatments for headaches, meditation and pain
relievers (specifically acetaminophen). a simple
random sample of 32 headache sufferers were
taught meditation techniques to treat their pain.
this group reported an average of 4.83
headache-free days with a standard deviation of
1.65 days. a different random sample of 35
headache sufferers was given acetaminophen to
treat their pain and reported an average of 5.02
headache-free days with a standard deviation of
2.18 days. find the 98% confidence interval for
the mean difference in headache-free days
between the two populations of headache
sufferers.