A random sample of 40 tea drinkers scores much lower on a stress scale than a random sample of those who do not drink tea. Does drinking tea lower stress?
Mar 17, 2015
While the hypothesis that "drinking tea lowers stress" is not unsupported by the study a couple of observations must be made:
- The sample size is much to small to make such a universal declaration.
- The results equally support an alternate hypothesis that "people who have low stress levels are more likely to drink tea."