SOLUTION: Find the mean of the distribution shown below. X 0 1 2 P(X) 0.24 0.31 0.45 Round your answer to two decimal place as necessary

Algebra ->  Probability-and-statistics -> SOLUTION: Find the mean of the distribution shown below. X 0 1 2 P(X) 0.24 0.31 0.45 Round your answer to two decimal place as necessary      Log On


   

Question 915539: Find the mean of the distribution shown below.
X 0 1 2
P(X) 0.24 0.31 0.45
Round your answer to two decimal place as necessary
Found 2 solutions by reviewermath, Hawksfan:
Answer by reviewermath(1029) About Me  (Show Source):
You can put this solution on YOUR website!
The mean is equal to 0(0.24) + 1(0.31) + 2(0.45) = highlight%281.21%29

Answer by Hawksfan(61) About Me  (Show Source):
You can put this solution on YOUR website!

The formula for this is the SUM of [P(X)*xi] = answer
In your problem this means the answer = (P0 * X0) + (P1 + X1) + (P2 + X2).
Now replace the variables with the numbers to get the following:
(0.24 * 0) + (0.31 * 1) + (2* 0.45) = 0.31 + 0.9 = 1.21 rounded to 1.2