SOLUTION: A 4 sided die is rolled, a 1 occurs 27.2% of the time, a 2 occurs 26.3% of the time, a 3 occurs 23.1% of the time, and a 4 occurs 23.4% of the time. Find E(X)? would this be

Algebra ->  Probability-and-statistics -> SOLUTION: A 4 sided die is rolled, a 1 occurs 27.2% of the time, a 2 occurs 26.3% of the time, a 3 occurs 23.1% of the time, and a 4 occurs 23.4% of the time. Find E(X)? would this be       Log On


   



Question 636317: A 4 sided die is rolled, a 1 occurs 27.2% of the time, a 2 occurs 26.3% of the time, a 3 occurs 23.1% of the time, and a 4 occurs 23.4% of the time.
Find E(X)?
would this be 1(.272)+2(.263)+3(.231)+4(.234)?
Please help! thank you so much

Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 
Hi,
Yes. Good work.
E(X) = 1%2A%28.272%29%2B2%2A%28.263%29%2B3%2A%28.231%29%2B4%2A%28.234%29