So my math teacher tells us that we will have to use logic/ common sense, but I don't know what key things to look for when identifying whether a problem is with or without replacement.
Problem:
Let's say that there are 40 ipads and we take a random sample of three ipads to see who has one with wifi and 3g or just wifi. There are 30 ipads with wifi and 3g and 10 with wifi only.
What is the probability that only one will have wifi only?
I do not need help on solving this, just how can I tell if it is with or without replacement. Thanks.
См. статью: How to tell is this probability is with or without replacement?