A researcher predicts that drinking more than 4 cups of coffee increases a person’s tolerance of caffeine, statistics assignment help
A researcher predicts that drinking more than 4 cups of coffee increases a person’s tolerance of caffeine. On a test if caffeine sensitivity, the u for non-coffee drinkers is a score of 20.5 while a sample of N=14 people who regularly drink more than 4 cups of coffee a day produces the following scores.
Scores – 16/14/19/17/16/18/17/15/18/19/12/14/20/22
a.What are Ho and Ha for this study?
b.Compute tobt.
What are the degrees of freedom?
with alpha = 0.05, what is tcrit?
e.What should the researcher conclude about this relationship?
f.Compute the 95% confidence interval for u?