Discussion:
Q: A sample of 40 recovering alcoholics was given the State-Trait Anxiety Inventory Test (STAI). The state anxiety score showed a mean of 38 and a standard deviation of 7. A psychologist suspected that recovering alcoholics in general had a higher mean state anxiety than the norm of 35. Do the sample data justify the suspicion? Complete the test with a 5% significant level. Use the p-value approach.