Sentry Page Protection
Exercise (2-4)
Copy and run the COFFEE data set from the yellow box below.
Copy and run the COFFEE data set from the yellow box below.
The COFFEE data set contains a list of decaffeinated coffee samples and their caffeine concentration.
The decaffeinated coffee is not totally caffeine-free.
They still contain about 7 mg of caffeine per serving on average.
Perform a statistical hypothesis testing on whether each brand of coffee (i.e. Brand A, B, and C) has an average of 7 mg of caffeine per serving.