2. random samples are the least biased samples.
Answer: 
Step-by-step explanation:


Answer:
-5z+1
Step-by-step explanation:
-11z-4+6z+5
-11z+6z-4+5
-5z+1
Replace x with and simplify
2x - 10
~Zane
Happy Halloween!
Answer:D
Step-by-step explanation:
You know that the card picked is an 8, so forget the rest of the deck (they are trying to trick you into thinking it is 2 cards out of 52 cards). So there are 4 8's in a deck. 2 are red, 2 are black. You have a 2/4 chance of pulling a red. 2/4 = 1/2