expected value = 1/4(1) + 1/4(2) + 1/4(3) + 1/4(4) = 5/2 or 2.5
So for 3 spins wouldn't it be 7.5 ?
Consider a disk and spinner with four equal sectors marked with the numerals 1, 2, 3, and 4.
What is the expected value for a single spin?
If the spinner is spun three times, what is the expected value for the sum of the three numbers spun?
3 answers
You win $4 if you flip a coin twice and get tails both times. For any other outcome you get nothing. What is the expected value?
it wouldn't be because if you do the math it is really close.