Suppose you have a bag of 10 sandwiches from the deli: one bacon, lettuce, and tomato (BLT;) one ham on rye; and eight bologna sandwiches. You pull out one sandwich and discover that you've pulled out the ham on rye.
If you put the sandwich back into the bag, what is the probability that you pull out the ham on rye the next time you pull out a sandwich?
A) 0.5 (either you pull it out or you don't)
B) 1/10
C) 1/9
D) 0
E) 1

Question

Quizplus · Accepted Answer

Since you put the sandwich back into the bag, the probability of pulling out any specific sandwich is always 1/10, regardless of what you pulled out before. Therefore, the probability of pulling out the ham on rye again is 1/10.

Suppose You Have a Bag of 10 Sandwiches from the Deli