Investigation $4$: Caffeinated Beverages $-$ Caffeine of Coffee and Energy Drinks

We can investigate if the difference of the mean caffeine content between caffeinated beverages that are Coffee based and Energy Drinks is significant. The data set is provided on Blackboard as a $.$csv file called CaffeineCoffeeEnergy. We are subtracting $($Coffee $-$ Energy Drinks$)$ when calculating the difference.

a$)$ Define the parameter of interest in context using symbol$($s$)$ and words in one sentence.

b$)$ State the null and alternative hypotheses using correct notation.