14. B (4, -2)
15. I am not exactly sure about this one but I would say either A or B.
Randomly assigned group. the art class isn't random and only consists of a select type of people--it is not a representative sample; maybe more left handed people enjoy art than do right handed people! therefore, even though the randomly assigned group is smaller, it is the better estimate.
Answer:
that's the answer
Step-by-step explanation:
for the next time, dont post you derivative questions on brainly, there is a lot of websites that can solve this for you with steps.
By putting each topping with each flavor you can have up to 20+ combinations because you can combine them any way u want the combinations have no limit