Wow a lot of plants but make a Mendelson Square [looks like a tic- tac -toe board (# this super large) with p and w at the top and p and w down the side. I would some how get those numbers checked out cuz generally there are only 4 squares:)
The answer to your question would be A
Answer: The correct is 114
Step-by-step explanation: Hope this helps
Answer:
The expected number of keys she will try before she opens the door is 4.5.
Step-by-step explanation:
A woman has eight keys on a key ring, one of which fits the door she wants to unlock.
Each of them is equally as likely to be the one to work, which means that this situation is represented by an uniform distribution with lower bound
and upper bound
.
Find the expected number of keys she will try before she opens the door.
The expected value of the uniform distribution is given by:

Considering
, as is the case in this exercise:

The expected number of keys she will try before she opens the door is 4.5.