Background: Iced mint tea is tasty.

Hypothesis: Iced mint tea with a lemon wedge will taste better than iced mint tea alone.

Materials: 30 Morrocan Mint tea bags; boiling water; a glass pitcher; two lemons; an unspecified number of ice cubes; a cup.

Procedure: 30 cups of iced mint tea were drank over the course of 8 days, half with a lemon wedge in the cup and half without. The tea was prepared in large quantities using the boiling water poured over 5 bags at a time in the glass pitcher. Once the tea was cooled and a glass of tea was desired by the test subject, a coin was flipped to determine whether the cup would have a lemon wedge included. Once 15 cups were drank with a lemon, the remaining cups were drank without to create two matched samples. Each cup was also prepared with 3 ice cubes. Each cup of tea was self rated 0-5 immediately upon being consumed, with 5 being the highest ranking. The ratings were compared using a Welch Two Sample T-Test.

Results:

## 
##  Welch Two Sample t-test
## 
## data:  rate by exp
## t = -6.3894, df = 25.516, p-value = 9.913e-07
## alternative hypothesis: true difference in means is not equal to 0
## 95 percent confidence interval:
##  -2.379615 -1.220385
## sample estimates:
## mean in group 0 mean in group 1 
##        2.066667        3.866667

Conclusion: Iced mint tea tastes better without lemon. The mean rating for mint tea without lemon (3.87) is significantly higher than the mean when a lemon is included (2.07). THe lemon added a sweetness that overwhelmed the cool refreashment of iced mint tea alone and the two tastes did not prove complimentary.