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.

Can someone 50 first drop menu 0.80 or 0.75 or 1.20 or 4.00 second drop menu 4.00 or 0.75 or 0.25 or 3.75 3rd 15,6,10, or 9 4th yes or no

Solve this problem! extra ! 3025/5.5 = a/90.75

There are two major tests of readiness for college: the act and the sat. act scores are reported on a scale from 1 to 36. the distribution of act scores in recent years has been roughly normal with mean µ = 20.9 and standard deviation s = 4.8. sat scores are reported on a scale from 400 to 1600. sat scores have been roughly normal with mean µ = 1026 and standard deviation s = 209. reports on a student's act or sat usually give the percentile as well as the actual score. the percentile is just the cumulative proportion stated as a percent: the percent of all scores that were lower than this one. tanya scores 1260 on the sat. what is her percentile (± 1)?