A bakery tests two oven temperatures (350 F, 400 F) and two baking times (20 min, 25 min) to find the best brownie. Each of the 4 temperature-time combinations is applied to 10 batches randomly.
How many treatments are in this experiment?
- A
2
- B
10
- Ccheck_circle
4
- D
40
Explanation
Two factors with two levels each yield 2 x 2 = 4 treatment combinations.